Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d2d8d18a40d5ed6…

MALICIOUS

PDF

61.0 KB Created: 2021-03-20 08:01:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 4fa92ef269a0c5f7537a941522a5f2f0 SHA-1: 5b3222f2d74b893d97821ab489f3edc6e1ea381a SHA-256: 8d2d8d18a40d5ed6286423d0abcc57bc42c4fa251774fc91458282aa070716a3
184 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of external links, many hosted on disposable domains, suggesting a link farm or phishing operation. The ClamAV detection and ML classifier strongly indicate malicious intent, likely to redirect users to malicious sites for further exploitation or credential harvesting. No scripts were extracted, but the PDF structure itself is designed to facilitate the distribution of links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9700

Heuristics 5

  • 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 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://dafemum.ru/award?keyword=abviewer+enterprise+pdf+to+dwg+converter+for+pc+free+download PDF link annotation
    • http://dibopisol.iblogger.org/voxoxodegutufuzezipo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365555/normal_602747446082f.pdfIn PDF document text
    • http://worameruvejaka.mywebcommunity.org/tevizuj.pdfIn PDF document text
    • http://kavelokafozi.medianewsonline.com/tertulliano_apologetico.pdfIn PDF document text
    • http://jixewelo.scienceontheweb.net/basic_math_aptitude_test_with_answers.pdfIn PDF document text
    • https://ziduxaxeg.weebly.com/uploads/1/3/1/3/131380546/tupofefifowuvaxamog.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482853/normal_60496ab01ab4f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452382/normal_6053149bba4ad.pdfIn PDF document text
    • http://kosebadujepeso.22web.org/zedovoravaduvi.pdfIn PDF document text
    • https://jeretidaker.weebly.com/uploads/1/3/4/5/134595905/xemobufo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450152/normal_60208e985f224.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404750/normal_5feb82a400ef8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4443594/normal_5fed7c843c1d8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369498/normal_5fe5d3f66f371.pdfIn PDF document text
    • http://medebupima.sportsontheweb.net/marketing_grade_11.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375206/normal_5ffc951508b68.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454306/normal_6031280db82bf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485322/normal_6019f0df165c8.pdfIn PDF document text
    • http://zodofujeki.atwebpages.com/76849023921.pdfIn PDF document text
    • https://s3.amazonaws.com/kozewuposoridil/nugubedejarijelulevejupij.pdfIn PDF document text
    • https://s3.amazonaws.com/jujadodedaruxix/inventory_forecasting_excel_template_free.pdfIn PDF document text
    • https://s3.amazonaws.com/kiwopusafize/4541503366.pdfIn PDF document text

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