Malicious PDF — malware analysis report

Static analysis result for SHA-256 81fc491a60d86f79…

MALICIOUS

PDF

61.3 KB Created: 2021-06-10 14:58:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: e5e7ddc79d974cdd5806ddf66e02259f SHA-1: 93a5730d2a4de906c2ed17d0c24ea15dad752d86 SHA-256: 81fc491a60d86f7946f5a7fd641593ca11bbdadae83f4fed1121cd2031058938
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 0.6079

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://pixomot.ru/pbw?utm_term=the+dark+knight+rises+game+download+for+android PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4467912/normal_601fb5e8c9431.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474478/normal_5fd1385a1b40e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376858/normal_5fe1086c1749a.pdfIn PDF document text
    • https://fapudunaga.weebly.com/uploads/1/3/0/7/130776769/rutavurebir.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476140/normal_605b095b0e685.pdfIn PDF document text
    • https://zokefipevi.weebly.com/uploads/1/3/4/3/134311683/e7dd470246da1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459796/normal_5fcbf24fba1bd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450890/normal_5ffd4c80d2c75.pdfIn PDF document text
    • http://kufepizerix.pbworks.com/f/napijoli.pdfIn PDF document text
    • http://lakobun.pbworks.com/f/prodigy_how_to_evolve_pets.pdfIn PDF document text
    • http://kepigiwup.pbworks.com/f/kejorofese.pdfIn PDF document text
    • http://jujupaw.pbworks.com/w/file/fetch/144533643/ozymandias_poem_main_idea.pdfIn PDF document text
    • http://fisojun.pbworks.com/w/file/fetch/144960603/polygons_in_the_coordinate_plane_worksheet_answers.pdfIn PDF document text
    • http://zizovitunex.pbworks.com/f/38022335179.pdfIn PDF document text
    • http://sejiliki.pbworks.com/w/file/fetch/144575913/duzanemim.pdfIn PDF document text
    • http://kosubufegu.pbworks.com/w/file/fetch/145011627/slotomania_vip_premium_download.pdfIn PDF document text
    • http://xoxafepapesu.pbworks.com/f/27827486479.pdfIn PDF document text
    • http://nekimijazom.pbworks.com/w/file/fetch/144669771/sizekururimapa.pdfIn PDF document text
    • http://zanonot.pbworks.com/f/nisegilapepuze.pdfIn PDF document text
    • http://pitevaj.pbworks.com/f/asp_safety_fundamentals_exam_secrets_study_guide.pdfIn PDF document text
    • http://lakobun.pbworks.com/f/pipuwig.pdfIn PDF document text
    • http://felinemumivu.pbworks.com/f/spoofer_pokemon_go_android_apk.pdfIn PDF document text

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