Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab26e6ea298a180f…

MALICIOUS

PDF

75.4 KB Created: 2021-07-17 14:15:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-15
MD5: eac4e8820c0c0eb7782b5d963407bfef SHA-1: e7f7e666ac7c31ef67ddfdecb4acb36bde9b75db SHA-256: ab26e6ea298a180f145c0780e5137993728e66a0652b47ed9b74b7e7e9fbea25
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous links to external websites, many of which appear to be hosted on compromised CMS platforms or disposable hosting. One high-severity heuristic indicates a link to an algorithmically-generated URL, suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or trojan delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9827

Heuristics 7

  • 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 to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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 https://www.lamuccacompany.com/wp-content/plugins/super-forms/uploads/php/files/183a261cb554df4b0eb8e4739fc8d888/bevaravevarufofaf.pdf In PDF document text
    • https://chicagoportablexray.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e78e6a14ccd---6449576622.pdfIn PDF document text
    • https://topjobsnepal.com/ckfinder/userfiles/files/88471730098.pdfIn PDF document text
    • https://nusamulticentralestari.com/Uploads/userfiles/files/dopavuvoliziku.pdfIn PDF document text
    • http://arohitourandtravels.com/userfiles/file/31646888116.pdfIn PDF document text
    • http://fobosgrunt.ru/files/ckfinder/files/logijozabi.pdfIn PDF document text
    • http://crmrealty360degree.in/userfiles/file/44213520589.pdfIn PDF document text
    • https://bdblue.com/ckfinder/userfiles/files/36546256122.pdfIn PDF document text
    • http://www.maarsehoveniers.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160cb2af4df6ad---53603349996.pdfIn PDF document text
    • https://sahodayabbsr.com/test/fckeditor/file/xexisuxo.pdfIn PDF document text
    • https://ises.ca/phpsites/vertical_living/uploads/file/72179955340.pdfIn PDF document text
    • https://totalyoumovement.com/wp-content/plugins/formcraft/file-upload/server/content/files/16084714aecfd8---juxenakoz.pdfIn PDF document text
    • https://sipare.com.ar/wp-content/plugins/super-forms/uploads/php/files/q8l35vr9pvj07e4ogp82aa6kku/gemixazimosijawi.pdfIn PDF document text
    • https://www.wikiwebagency.it/wp-content/plugins/super-forms/uploads/php/files/08ccac0dd1f1a7e3aaa77945c78cd72f/warekomakubivipaw.pdfIn PDF document text
    • http://geose.ru/userfiles/file/lizowidavuxumomarop.pdfIn PDF document text
    • http://busangh.com/attfile/fckimg/file///202106023140_853210341.pdfIn PDF document text
    • http://pericosrentcar.com.mx/wp-content/plugins/formcraft/file-upload/server/content/files/1609ae90517410---wumilobovero.pdfIn PDF document text
    • http://romanakladatelstvi.cz/userfiles/file/xupuzukumiwelufukav.pdfIn PDF document text
    • http://staractivecollection.com/resimler/site/files/fevaregipazerofux.pdfIn PDF document text
    • https://www.landalastadservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b70c435ff69---kupezonuvoxaxedevi.pdfIn PDF document text
    • https://inclinedigital.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f91ea0cf4a---54099750389.pdfIn PDF document text
    • http://izumrud38.com/ckfinder/userfiles/files/63260184498.pdfIn PDF document text
    • http://ne-moloko.ee/wp-content/plugins/super-forms/uploads/php/files/7f1187bfc04c397b47469a0e390d8e0b/25805062361.pdfIn PDF document text
    • http://www.iycadana.org/wp-content/plugins/super-forms/uploads/php/files/1hqeoskilq3q3gv2ob0dvcdn06/18537583792.pdfIn PDF document text
    • http://artistalexanderkanevskywinnerinternationalaward.com/clientMedia/file/28884430921.pdfIn PDF document text
    • https://simovi.mx/wp-content/plugins/formcraft/file-upload/server/content/files/160a0f8f52dbca---340159132.pdfIn PDF document text
    • http://amandatravel.com/userfiles/file/tetesibevusavebowixeped.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/GLLx1DTH0VQ/uplcv?utm_term=our+lady+of+mercy+footballPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c42e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC42E 10652 bytes
SHA-256: 7a440e63a4488c4c31afa54f302856bdc4a512748b425bb6f94f27023f5a8888
font_01_sfnt_off0000dca9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCA9 16736 bytes
SHA-256: b287677b4df6d4a6ec556504a8cbe44110f37d365b5a411194ea85022213bafb
font_02_sfnt_off0001082b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1082B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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