Malicious PDF — malware analysis report

Static analysis result for SHA-256 14279f304463ae49…

MALICIOUS

PDF

86.9 KB Created: 2021-06-29 06:15:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 383aa529e351308b6f8344900a3c6a1c SHA-1: 4e2f0c3c844eff783d1d9b52779ae9351713354d SHA-256: 14279f304463ae497c2ee17ad1d568b59f144ec0441a5b4fdcc6c678e8b651a4
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains a link farm pointing to numerous domains, many of which are hosted on compromised WordPress sites or disposable hosting, suggesting an attempt to distribute malicious content or engage in SEO manipulation. No scripts were extracted, but the presence of numerous external links indicates a likely intent to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. 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://fitsiluet.cz/data/file/60064571172.pdf
    • https://gk-termopanel.ru/wp-content/plugins/super-forms/uploads/php/files/65140198fcd97b41f68680f62907adbe/15035381889.pdf
    • http://podlahyadvere.sk/editor_uploads/system/files/potididajijowuwemifomanap.pdf
    • http://dongshengcable.com/images/upload/File/tuwuraxibu.pdf
    • https://sckstone.com/wp-content/plugins/super-forms/uploads/php/files/eecddbbb9d59631fb5bc862eaf350e26/88461668585.pdf
    • https://cremeconferences.com/wp-content/plugins/super-forms/uploads/php/files/30dea6606225a543bb6d20a7627c9b10/54668070130.pdf
    • http://wrtour.com/FileData/ckfinder/files/20210601_5E30ED8D19425847.pdf
    • https://deesudcoolingtower.com/userfiles/file/61381393336.pdf
    • http://www.sunarpazarlama.com/wp-content/plugins/super-forms/uploads/php/files/5k2apvc8h44ae7bdpb2i20emt6/tavepeso.pdf
    • http://www.veronicaneal.com/wp-content/plugins/formcraft/file-upload/server/content/files/1/160bc447f44eae---28177933179.pdf
    • https://inchiriereelicoptere.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1609967101b7da---94884707080.pdf
    • https://cihangirhotel.com/upload/ckfinder/files/60434224729.pdf
    • http://toeicspeaking.net/_UploadFile/Images/file/zepipiwixofixefofebur.pdf
    • http://kassa.pl/userfiles/file/39986717723.pdf
    • http://dom-nenilovo.ru/wp-content/plugins/super-forms/uploads/php/files/1797a74c6a512d2b30b09cdbe188530d/9629044408.pdf
    • http://metapolar.hu/tmp/mivaguxoru.pdf
    • http://sangiorgioautoservizi.com/userfiles/files/17490108380.pdf
    • http://www.odnpoznan.pl/fotki/file/file/pujamosapidenel.pdf
    • http://www.anclupnapoli.it/userfiles/file/lowula.pdf
    • http://dbcasagayathottam.org/assets/uploads/cms_images/files/14409888079.pdf
    • https://www.generalutilities.com/wp-content/plugins/formcraft/file-upload/server/content/files/160976b297ffd6---tekeponadokesabizovifogi.pdf
    • https://luminex.pl/upload/file/rexesosulijuti.pdf
    • https://www.couleurs-et-jardin.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160a0b5c5e5556---68131316607.pdf
    • https://angelsstaff.com/uploads/file/51872073573.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3CAf4wW3hvY/uplcv?utm_term=bose+lifestyle+48+installation+manual
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eeae.bin
e9958dc9b6cf2a0a2e9eb027b69acb3391ac330f3e768f5090d39275f7d62485
pdf-font-stream PDF embedded font (sfnt) at offset 0xEEAE 10828 bytes
font_01_sfnt_off000107be.bin
9b3a644919c96b4a78fc06079f6c9f5d0991df15bd7b9ac459d2befc9add859f
pdf-font-stream PDF embedded font (sfnt) at offset 0x107BE 17888 bytes
font_02_sfnt_off00013679.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x13679 16792 bytes