Malicious PDF — malware analysis report

Static analysis result for SHA-256 80ea38e61604d3d9…

MALICIOUS

PDF

230.8 KB Created: 2021-07-17 17:12:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-23
MD5: 6be30339e04bb807e8f333c7261ad0b8 SHA-1: 11554ab2cb700051c771ac7048b2bc180e135de3 SHA-256: 80ea38e61604d3d9dd989d2144944eae76e9a26a5e0048309429279409780084
66 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, many hosted on compromised CMS upload directories. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8311

Heuristics 4

  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://mwflower.com/upimagesfile///51702305797.pdf In PDF document text
    • http://stpatricksreunion.org/clients/84553/File/tukedowawiluguj.pdfIn PDF document text
    • http://omniatel.it/wp-content/plugins/formcraft/file-upload/server/content/files/160aa9492ab48c---41373171772.pdfIn PDF document text
    • http://banlinhkienlaptop.com/userfiles/file/wukakabuxeleletiwepa.pdfIn PDF document text
    • http://optimus.org.au/wp-content/plugins/formcraft/file-upload/server/content/files/1607bb9f5cb631---82547384734.pdfIn PDF document text
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607479e9087d3---zakizisoxodofeveku.pdfIn PDF document text
    • http://cbelmira.com/wp-content/plugins/super-forms/uploads/php/files/6ufcoad6lhutdrvm8cu3bkjdp6/nowulaxa.pdfIn PDF document text
    • https://www.geosuiteonline.de/wp-content/plugins/formcraft/file-upload/server/content/files/160ba7b2ac13be---35196967985.pdfIn PDF document text
    • http://reszke.pl/fckeditor/editor/filemanager/connectors/php/file/mavuvovujewazelaxibo.pdfIn PDF document text
    • https://arredamentigiacobbe.it/file/75085721879.pdfIn PDF document text
    • https://www.tifdip.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607300971ed86---zaxuziso.pdfIn PDF document text
    • https://regeneracion-capilar.com/wp-content/plugins/super-forms/uploads/php/files/57a262e376fab9e82627ccdb4456d2c3/bimogekovukavakaj.pdfIn PDF document text
    • http://dodici12.ru/wp-content/plugins/super-forms/uploads/php/files/r469fles9m3rvaen8cikm84p63/38122501859.pdfIn PDF document text
    • https://www.sgestrecho.es/wp-content/plugins/formcraft/file-upload/server/content/files/1609229b30e747---tabozunerobulivuxaxemeze.pdfIn PDF document text
    • https://saftanton.dk/wp-content/plugins/formcraft/file-upload/server/content/files/160b075d0b4fe9---nutebesuj.pdfIn PDF document text
    • https://perleyparish.org/wp-content/plugins/super-forms/uploads/php/files/07b755cccf1efd67749bea42eafb32a7/jabutegijokelerolevani.pdfIn PDF document text
    • http://www.rolstoellift.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a07995c105c---pumoxadirutelow.pdfIn PDF document text
    • https://picinterior.com/ckfinder/userfiles/files/17936631581.pdfIn PDF document text
    • http://gelikonline.ru/content/Files/8265394174.pdfIn PDF document text
    • https://puertoestereo.com/wp-content/plugins/super-forms/uploads/php/files/qq12f3ffgl1f7tqappk965ebq4/26627195710.pdfIn PDF document text
    • http://www.pianoszimmermann.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609091141e57d---gagajasebebupaj.pdfIn PDF document text
    • https://xo-sound.ru/userfiles/file/wuvudobenowux.pdfIn PDF document text
    • https://europeancustomtailor.com/wp-content/plugins/super-forms/uploads/php/files/b2c79031b40b774c058cb98d911cdc39/30558836554.pdfIn PDF document text
    • http://viral-list-machine.com/ckfinder/userfiles/publics/files/bimazebusolamufivurap.pdfIn PDF document text
    • http://polipack.ru/content/file/pegamurazopixexobizuk.pdfIn PDF document text
    • https://tkpmission.org/wp-content/plugins/formcraft/file-upload/server/content/files/160b9495c31555---raboxoxifekur.pdfIn PDF document text
    • https://www.northamericatalk.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070a33c0d089---14301128711.pdfIn PDF document text
    • https://diversifiedhumansolutions.com/wp-content/plugins/super-forms/uploads/php/files/5bcfa86cf8e9c06cd598ce0b4591da7d/26549367931.pdfIn PDF document text
    • http://terapeutickemasaze.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1608464d0ccdeb---falefurit.pdfIn PDF document text
    • https://sdyh.gr/wp-content/plugins/super-forms/uploads/php/files/7k6pdutvep97vi13pk8rb0ubf2/52092915994.pdfIn PDF document text
    • http://nmglyxx.com/userfiles/file/baditovavigefo.pdfIn PDF document text
    • https://marksiegeldds.com/wp-content/plugins/super-forms/uploads/php/files/4d613d1202d198915e015b7c0964297d/51465889114.pdfIn PDF document text
    • http://lateonsettay-sachs.org/userfiles/file/minibu.pdfIn PDF document text
    • http://blog.crowdly.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083b9bf6d983---29908203383.pdfIn PDF document text
    • https://www.histoiresdegroupes.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076056608949---84428753789.pdfIn PDF document text
    • https://www.cfo-search.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b4493304448---sivugikudubo.pdfIn PDF document text
    • http://www.hj-bouwt.be/wp-content/plugins/formcraft/file-upload/server/content/files/16072ef613a402---fogoxamemarowip.pdfIn PDF document text
    • http://aaz.sk/editor_uploads/files/xikefojubox.pdfIn PDF document text
    • http://skup-laptopow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160768c00d3f32---jorumiluwuxafimap.pdfIn PDF document text
    • http://stopasbestos.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1608e65f66a16b---24258265609.pdfIn PDF document text
    • https://sunarchegypt.com/userfiles/file/65391055285.pdfIn PDF document text
    • http://centreforeffectivecoaching.com/media/file/138363955.pdfIn PDF document text
    • http://0-50.ru/userfiles/file/20918582393.pdfIn PDF document text
    • https://karinbentum.nl/uploads/file/wejarilefek.pdfIn PDF document text
    • https://diversified-nj.com/wp-content/plugins/super-forms/uploads/php/files/5e859aa8ce9c5213f72e9b9077406913/74337557127.pdfIn PDF document text
    • https://shrmivirtual.org/wp-content/plugins/super-forms/uploads/php/files/a7f6cdf78177a83da7c77cb52fce0d15/pakodalewagamixovow.pdfIn PDF document text
    • http://www.bewegeninarnhem.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1609689fad5086---fovureg.pdfIn PDF document text
    • http://www.sunargrup.com.tr/wp-content/plugins/super-forms/uploads/php/files/5g8e0h2ecpp80fc5hft0togp90/61842613679.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/GLLx1DTH0VQ/uplcv?utm_term=husky+price+in+russiaPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    +7 more URL(s)

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00014c40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14C40 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00016457.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16457 10400 bytes
SHA-256: c648de9b955e4249ac98df77aa6cab078d939aa3f131c1fd8ce8ff0a79e88925
font_02_sfnt_off00017bfc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17BFC 17480 bytes
SHA-256: 9b86b88b2031cce94b796679985f0912a0011c51f5bd49e23af184c4565fcb23
font_03_sfnt_off000329b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x329B2 10728 bytes
SHA-256: ce05e320b0dfae212b49670404968e420a1c9bdd75541179ceed53f33497b0db
font_04_sfnt_off00034246.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x34246 19832 bytes
SHA-256: fc01724bca5714901479bae3c88640cef55f7b0043e965a965155f6d65679e66

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