Malicious PDF — malware analysis report

Static analysis result for SHA-256 348f9cc180633144…

MALICIOUS

PDF

67.6 KB Created: 2021-02-27 22:57:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 81d7bff24a2abc5f04c3dbad01bde680 SHA-1: aa3fb4ac0450b65d5580726e7a24903cb5c795f2 SHA-256: 348f9cc18063314407db0f95d3857b32ccadf692378c8473a1024fb2480e58f9
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 0.9063

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://xezojetit.ru/aws?utm_term=beats+solo+2+wired+manual PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4455883/normal_5fdad18255493.pdfIn PDF document text
    • https://kobamaputoruv.weebly.com/uploads/1/3/1/4/131409310/9752658.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460450/normal_6029356eec441.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402724/normal_602e6e3a197ce.pdfIn PDF document text
    • http://online-sistem.site/bumoragufobegevi7x4.pdfIn PDF document text
    • https://fumabufoduf.weebly.com/uploads/1/3/5/3/135313851/4667050.pdfIn PDF document text
    • http://uniques.space/mivomepamiwimagimitofelembp1se.pdfIn PDF document text
    • http://ideaita.fun/pafixoxagp49d.pdfIn PDF document text
    • https://zexejofamimow.weebly.com/uploads/1/3/1/4/131438337/xudasikedikure_vepuradexowolas_safeje.pdfIn PDF document text
    • https://burigazipe.weebly.com/uploads/1/3/4/7/134764527/wozim.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449771/normal_6025eeae59e0b.pdfIn PDF document text
    • http://deruvakibifazo.iblogger.org/riforojamevapofuxe.pdfIn PDF document text
    • https://wajiwojoduposop.weebly.com/uploads/1/3/1/3/131379590/milifud.pdfIn PDF document text
    • http://vawekud.epizy.com/mafukej.pdfIn PDF document text

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