Malicious PDF — malware analysis report

Static analysis result for SHA-256 5bfffe87edd56964…

MALICIOUS

PDF

37.6 KB Created: 2020-11-25 02:52:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5e4aa5e4a76b321069611e112ab110fa SHA-1: 46143eeff0d91fb08225aba0997b416915fe9cea SHA-256: 5bfffe87edd56964147e1b9d4246643031d3f09dc9974e5e322fa863a2081dc7
262 Risk Score

Malware Insights

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

This PDF document functions as a phishing lure, employing a screenshot to obscure a malicious link. The embedded link directs to 'traffmen.ru', identified as malicious redirector infrastructure. The document also contains a link farm pointing to various PDF files hosted on disposable domains, likely for SEO poisoning or to distribute further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6592

Heuristics 6

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 37 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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.
  • 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://traffmen.ru/aws?utm_term=backyardigans+full+episodes+free
    • https://menelaxewo.weebly.com/uploads/1/3/4/3/134362368/xuzapizadugo.pdf
    • https://juwarojolajekol.weebly.com/uploads/1/3/4/1/134108785/4515227.pdf
    • https://zakexexeg.weebly.com/uploads/1/3/4/7/134720850/gavipapedavufe-wuwemomemu.pdf
    • https://jomixemaletid.weebly.com/uploads/1/3/4/6/134659672/666f151dcec806.pdf
    • https://sutogibigasoju.weebly.com/uploads/1/3/1/0/131070189/jekugovaruliv-peridajafo-lejumewusi.pdf
    • https://latijazaw.weebly.com/uploads/1/3/4/3/134312978/debuninukeweje.pdf
    • https://s3.amazonaws.com/leguvefu/software_quality_assurance_download.pdf
    • https://uploads.strikinglycdn.com/files/adbd9a00-0284-45b2-b426-59249067259f/arka_sokaklar_315._blm_full_hd.pdf
    • https://s3.amazonaws.com/kakekojezutok/74035830759.pdf
    • https://uploads.strikinglycdn.com/files/38824889-56ac-4252-bdb1-4e4020c0a1ff/xhamster_hnliche_seiten.pdf
    • https://uploads.strikinglycdn.com/fi

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