Malicious PDF — malware analysis report

Static analysis result for SHA-256 442ab301c8cdbf8a…

MALICIOUS

PDF

50.6 KB Created: 2020-12-19 21:41:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 28dae46a7a09a615388a76284cbdc22b SHA-1: f36c7b17b7454fa2a11fe4d35e75f57b0025a3da SHA-256: 442ab301c8cdbf8afb11fec75a066a827dcc9915eac07ae8fada76faf837a509
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of external links, many pointing to disposable hosting services, suggesting a link farm designed to distribute malicious content or phish users. The ClamAV detection and ML classifier further indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and heuristics strongly suggest it's designed to redirect users to potentially harmful URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6781

Heuristics 5

  • 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
  • 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://trafffe.ru/aws?utm_term=juniper+srx340+installation+guide
    • https://gemujofu.weebly.com/uploads/1/3/4/3/134372819/dizuvuka-patowofopasevi.pdf
    • https://maladebo.weebly.com/uploads/1/3/4/3/134305387/9664371.pdf
    • https://xinotojopafexiz.weebly.com/uploads/1/3/4/3/134316842/tewipozevavof.pdf
    • https://botasapozav.weebly.com/uploads/1/3/1/6/131607984/2453784.pdf
    • https://dotomogef.weebly.com/uploads/1/3/4/7/134760479/7621103.pdf
    • https://static.s123-cdn-static.com/uploads/4450513/normal_5fddfdf759dfa.pdf
    • https://toroborelap.weebly.com/uploads/1/3/4/8/134867907/ca967a.pdf
    • https://nupizerijubodo.weebly.com/uploads/1/3/4/8/134891039/2940192.pdf
    • https://s3.amazonaws.com/kigavanus/guperex.pdf
    • https://uploads.strikinglycdn.com/files/099a5dc3-7f19-4abf-a225-1d0fe64bf005/padi_manual.pdf
    • https://s3.amazonaws.com/sugosubexez/batomi.pdf
    • https://static1.squarespace.com/static/5fc537ae0a2757459bff2ea8/t/5fc68155cb3e0f5771321347/1606844757493/15759584675.pdf
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf623c7acac6192ab8bddd/1606378044707/sanskrit_boy_names_starting_with_n.pdf

Open this report in the interactive analyzer, or submit your own file for analysis.