Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a5ee7f85324c204…

MALICIOUS

PDF

57.1 KB Created: 2021-06-09 17:56:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: b2d8273a430582ad78b8c081fc08548a SHA-1: 3b0f572397d0b380934bb6d29e6e28ddfbc3f80f SHA-256: 9a5ee7f85324c204716fb88337fdbae7312746a6a447dcfc4ac6a536d5dfda67
124 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

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

Machine Learning

  • Nyx PDF Classifier malicious score 0.7213

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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
  • 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://archism.ru/pbw?utm_term=the+last+leaf+multiple+choice+questions PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4412378/normal_602b3935bfc94.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384839/normal_6041ce7b13719.pdfIn PDF document text
    • https://xonujofepip.weebly.com/uploads/1/3/4/3/134385468/26f36b8837e8b32.pdfIn PDF document text
    • https://tewonubipudi.weebly.com/uploads/1/3/6/0/136016370/7673744.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426541/normal_5fff7e3f152ea.pdfIn PDF document text
    • http://fisagibop.pbworks.com/f/32561416914.pdfIn PDF document text
    • http://jizakatum.pbworks.com/f/valor_absoluto_y_valor_relativo_ejercicios.pdfIn PDF document text
    • http://tiduxikuve.pbworks.com/f/8.pdfIn PDF document text
    • http://fuxedemama.pbworks.com/f/pcos_indian_diet_plan_to_get_pregnant_in_hindi.pdfIn PDF document text
    • http://legalugo.pbworks.com/f/pajebikebujin.pdfIn PDF document text
    • http://naxoxututal.pbworks.com/f/the_secret_life_of_walter_mitty_soundtrack_song_list.pdfIn PDF document text
    • http://gafuxexosaru.pbworks.com/w/file/fetch/144586398/tum_se_achcha_kaun_hai_movie_mp3_songs_free_download.pdfIn PDF document text
    • http://gosavepifij.pbworks.com/w/file/fetch/144743871/marriage_biodata_format_for_girl_doc_free_download.pdfIn PDF document text
    • http://molosafokaji.pbworks.com/f/67872892551.pdfIn PDF document text
    • http://kelivesas.pbworks.com/w/file/fetch/144474906/21875932395.pdfIn PDF document text
    • http://punumiboxo.pbworks.com/f/dajipulubowugipugumis.pdfIn PDF document text

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