Malicious PDF — malware analysis report

Static analysis result for SHA-256 6967bc8d0a2e6322…

MALICIOUS

PDF

69.4 KB Created: 2020-11-17 06:19:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: a62e16fb38683a61010401b1d363381a SHA-1: 1fd08d3cb4f0d410ae578cdd79856d86cf248929 SHA-256: 6967bc8d0a2e632252d588872ff7a4ff1d595e80063dd5474fcfb88bd5c99149
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains numerous external links, many hosted on disposable domains, suggesting a link farm designed to redirect users. The document body, though heavily obfuscated, references 'Victoria 2 militancy cheat', likely a lure to drive traffic to the malicious URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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 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
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://traffset.ru/strik?utm_term=victoria+2+militancy+cheat PDF link annotation
    • https://jubonofu.weebly.com/uploads/1/3/4/2/134234671/vipaj.pdfIn PDF document text
    • https://vumevomuw.weebly.com/uploads/1/3/4/3/134335884/linaneti_kuwozo_sogodajesi.pdfIn PDF document text
    • https://bovexojegej.weebly.com/uploads/1/3/4/4/134481742/doridakasupuwed.pdfIn PDF document text
    • https://turomanusogagi.weebly.com/uploads/1/3/1/4/131453559/majajisanolaxokime.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387819/normal_5fa3c3f62cc21.pdfIn PDF document text
    • https://xuzelakojit.weebly.com/uploads/1/3/4/5/134593048/3992913.pdfIn PDF document text
    • https://sodavamipe.weebly.com/uploads/1/3/4/5/134513083/7bb52961ee8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/rizijubovapuk/68612146818.pdfIn PDF document text
    • https://s3.amazonaws.com/takeju/war_robots_cheats_for_kindle.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9ae81251-51c8-42e6-85e4-d3d71b6d71bc/jijixigazofududini.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/62a1a44d-1f5c-4027-a32f-d9283237099a/kayla_itsines_bbg_workout.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d4ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4CA 5060 bytes
SHA-256: bd485a83c7fd416eb32b13bad0e783c4bb38d66dcfa4ca74483e307503f6395c
font_01_sfnt_off0000e5df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5DF 10284 bytes
SHA-256: 9cfd7b50ee68e17e9a4f73aa56e0e75398af8c028c3e9118986001c9e4dd8508

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