Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa5e6c144382a7f1…

MALICIOUS

PDF

50.6 KB Created: 2021-03-10 03:14:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: a5a871bdacb0fd38eaf81acf0816e2dc SHA-1: a6b2fc89971b4768ba2e0d73f8974f36173ef231 SHA-256: fa5e6c144382a7f1be49589bebe07c6416ceb99d8b566ab17483b5a577fe3c4a
184 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 0.6325

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://pelibifir.ru/aws?utm_term=what+is+the+importance+of+sentence+structure PDF link annotation
    • https://melesosinipedo.weebly.com/uploads/1/3/4/4/134475371/vojusewa.pdfIn PDF document text
    • https://pujuwofox.weebly.com/uploads/1/3/4/8/134882524/xupowuziv_guseforebofuj_kerisejanewose.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415077/normal_6001c9fd8b610.pdfIn PDF document text
    • http://businesslinecenter.com/balance_general_proformae6yu6.pdfIn PDF document text
    • http://adminhalil.com/facebook_portal_device_user_guidew7cv7.pdfIn PDF document text
    • https://vizegibog.weebly.com/uploads/1/3/4/4/134458583/62c2deb54f6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486221/normal_5feafd7929a63.pdfIn PDF document text
    • http://twenty-promo2020.ru/2510179181e7no5.pdfIn PDF document text
    • https://kevofogag.weebly.com/uploads/1/3/5/9/135962027/dedipamosofulekon.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450512/normal_5fd2de13e9a9f.pdfIn PDF document text
    • https://kapojisu.weebly.com/uploads/1/3/2/6/132696117/keradebev-bisutuvewejebe-mafejatetuke.pdfIn PDF document text
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    • https://fanamixaxa.weebly.com/uploads/1/3/4/0/134017579/5415558.pdfIn PDF document text
    • http://romeita.space/breakout_edu_answers_spooktacularnn42r.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496818/normal_5ff5421c184b1.pdfIn PDF document text
    • https://s3.amazonaws.com/ninasivol/gureviturirarevar.pdfIn PDF document text
    • https://s3.amazonaws.com/xamibebulosaxug/68963905435.pdfIn PDF document text
    • https://s3.amazonaws.com/dinilederu/gulmohar_english_reader_class_7_answer_key.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0532fce2-a203-4a30-b1d9-a1fd91d22843/panasonic_deluxe_10_cup_rice_cooker_sr-cn188wst.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/464a8be2-6ad2-4882-9b99-a92d2fdb459f/is_gta_5_playable_on_ps5.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c974b10d-7554-4d86-b08c-f4672aebe478/doliroropoxufuxib.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0719c37b-2ea0-4c8d-b73d-a8a0b6617539/xijonegeminuvenutu.pdfIn PDF document text
    • https://s3.amazonaws.com/gurupixabogivaz/peradapodegemiwager.pdfIn PDF document text
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