Malicious PDF — malware analysis report

Static analysis result for SHA-256 887b78400f8eebfc…

MALICIOUS

PDF

84.6 KB Created: 2021-02-27 07:21:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ad3b6d10bd20ed8ed53ecdca18e6272a SHA-1: 62c8b4a42babc072d561da2148ad20d443e72021 SHA-256: 887b78400f8eebfc5dbb16fdf81e5fe77a2b382979d4b1f60897cdbfebcfccf4
184 Risk Score

Malware Insights

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

This PDF file contains a large number of external links, many hosted on disposable domains, characteristic of a link farm. The ClamAV detection and ML classifier indicate malicious intent, likely to distribute phishing content or malware. The embedded links suggest a potential for users to be directed to malicious sites or download further malicious payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9131

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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://leonvi.ru/aws?utm_term=spinoza+ethics+part+1+explained
    • https://cdn.sqhk.co/goworonol/8sgiyIP/ghost_blasters_elitch_gardens.pdf
    • https://revewodozuxun.weebly.com/uploads/1/3/1/3/131398596/zotapuwo.pdf
    • https://cdn-cms.f-static.net/uploads/4366005/normal_602a44c72a11a.pdf
    • https://wapexuji.weebly.com/uploads/1/3/5/3/135329723/bowiselowix.pdf
    • https://xoxatazafej.weebly.com/uploads/1/3/4/8/134861408/1a8e11f0b2af01b.pdf
    • https://majuxakitififez.weebly.com/uploads/1/3/0/7/130738909/8273025.pdf
    • https://guvepilafofifiv.weebly.com/uploads/1/3/4/6/134682232/9651377.pdf
    • https://cdn.sqhk.co/bapisolel/Vhnheih/free_lesson_plan_parts_of_speech.pdf
    • https://mojapilujo.weebly.com/uploads/1/3/0/9/130969316/xegaru_mumovuxu_xifojim_nasotem.pdf
    • https://cdn.sqhk.co/kixagixupo/gIjbWgj/reminudorekofajesujutowin.pdf
    • https://fejoburu.weebly.com/uploads/1/3/0/8/130813906/viberiv_xogikik_madizizo.pdf
    • https://janirakuvofubej.weebly.com/uploads/1/3/4/7/134734148/110393.pdf
    • https://rubexanow.weebly.com/uploads/1/3/5/3/135346757/99d61d4d6beec.pdf
    • https://rokaxitifefisol.weebly.com/uploads/1/3/4/0/134040577/c4ebb8de7d6.pdf
    • https://nagugopusoz.weebly.com/uploads/1/3/4/6/134645600/vowaxedobasipe.pdf
    • http://fegebixabuwuri.rf.gd/cast_away_movie_tamil_dubbed.pdf

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