Malicious PDF — malware analysis report

Static analysis result for SHA-256 d560f66be35ac9d5…

MALICIOUS

PDF

68.0 KB Created: 2021-01-11 22:49:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 6f9878d4af77a881500db01b062e0f25 SHA-1: 94595a909a35f22b755dbc1dd7072943ef4eedc3 SHA-256: d560f66be35ac9d55e48fbb708385ca0604dd325b0381b823e7feb7055614326
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous embedded URLs, many hosted on disposable domains, suggesting a link farm designed to redirect users. The primary URL, 'https://traffset.ru/aws?utm_term=adobe+audition+free++full+version+mac', appears to be a lure for free software, likely leading to a phishing or malware distribution site. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan.

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/aws?utm_term=adobe+audition+free++full+version+mac PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4447663/normal_5fd67d5086063.pdfIn PDF document text
    • https://cdn.sqhk.co/bofogarabu/jgfjeTq/vamekupekevepam.pdfIn PDF document text
    • https://nozijuga.weebly.com/uploads/1/3/4/6/134698325/sadaguvudoguv.pdfIn PDF document text
    • https://site-1226757.mozfiles.com/files/1226757/baked_potato_soup_recipe_with_heavy_whipping_cream.pdfIn PDF document text
    • https://rabugotekinevod.weebly.com/uploads/1/3/1/8/131871666/ragenuvu.pdfIn PDF document text
    • https://lufeziwupidel.weebly.com/uploads/1/3/5/3/135345985/funojusokuj-vesagevagujepo-vavogaguxexa-reloxuzu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479223/normal_5fc39b222d94c.pdfIn PDF document text
    • https://soleduni.weebly.com/uploads/1/3/4/5/134581057/zuludosaxom.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425916/normal_5fb33fc70bfb9.pdfIn PDF document text
    • https://site-1176527.mozfiles.com/files/1176527/nefogigipomenokozagowi.pdfIn PDF document text
    • https://cdn.sqhk.co/vovusupa/yhcidie/transworld_endless_skater_characters.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/rokuwapesu/dead_frontier_fast_leveling_guide.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cf43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF43 5356 bytes
SHA-256: eb7869c37663e3e0c2aa3176e3f780eb71fa1b375873f23d1c9ba8bdc42d155e
font_01_sfnt_off0000e16e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE16E 9972 bytes
SHA-256: 7d715beed30b6c1a68d9f5ed2d1e4a68b8c1e5adfbc8cfdd7d6e246f4fa983a5

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