Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1ddd6898251684a…

MALICIOUS

PDF

78.5 KB Created: 2021-05-29 05:45:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: b2370352ca6c494ffc8d74e31a7bae0c SHA-1: 597f8f780cbdd41cfb7721bd952a16b0013d280b SHA-256: e1ddd6898251684a71e339157a823cdce748edf0c0ddfb4dd8696495a8ad8d74
186 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The file contains a large number of external links, many hosted on disposable domains, suggesting a link farm or phishing operation. The embedded URL 'https://mezovuduw.ru/strik?utm_term=god+of+war+iii+psp+game' further supports the lure of game-related content to entice users to click through to potentially malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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 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.
  • 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://mezovuduw.ru/strik?utm_term=god+of+war+iii+psp+game PDF link annotation
    • https://paweweribawu.weebly.com/uploads/1/3/4/6/134656346/1789588.pdfIn PDF document text
    • https://dabawide.weebly.com/uploads/1/3/7/5/137511183/237d49b53271e6.pdfIn PDF document text
    • https://dasatupulike.weebly.com/uploads/1/3/4/1/134131314/2503343.pdfIn PDF document text
    • https://penalimabupata.weebly.com/uploads/1/3/4/7/134700578/runusujorugolomezowe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366331/normal_5fe9b4b3d0d31.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374968/normal_605acf37f341a.pdfIn PDF document text
    • https://devomejot.weebly.com/uploads/1/3/4/4/134491467/d3213acbbdb.pdfIn PDF document text
    • https://niduzipotobumam.weebly.com/uploads/1/3/6/0/136054567/ruwizabemetomopebesa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423780/normal_605bea9d575a6.pdfIn PDF document text
    • https://vozumovoso.weebly.com/uploads/1/3/4/5/134506012/d1638bbc16.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461495/normal_602e1e4e49e6c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385020/normal_60148532366a9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408188/normal_5ff277f863028.pdfIn PDF document text
    • https://pupinalakarer.weebly.com/uploads/1/3/4/2/134234580/1c3a336bace81e.pdfIn PDF document text
    • https://fedubipogumuwu.weebly.com/uploads/1/3/1/3/131379546/gujebuxibezigivepe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501212/normal_600345e481fb3.pdfIn PDF document text
    • https://dexonakupo.weebly.com/uploads/1/3/4/6/134644734/togeruxed.pdfIn PDF document text
    • https://xefofuzidadadaz.weebly.com/uploads/1/3/4/8/134876265/lirumez-duxafofalixef-malodufevim.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/b4fd583d-ae58-4b32-a014-5cecf5b88d98/pixov.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cde6a0a1-42c1-479e-b819-a12c7b0d4548/eventide_h9_harmonizer_max.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fd09aacf-9f33-4d71-9aa5-9f307cb7219a/does_navy_allow_tattoos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b95306cb-db56-4cf5-bac6-3f1c41ac7b84/66660627169.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_off0000f218.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF218 5452 bytes
SHA-256: f3b36bbd7b419d75a6f3d38cb2a0a9a9da3e01d7906f20776a91edea78eb13c8
font_01_sfnt_off000104a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104A9 12928 bytes
SHA-256: e9a4ee8eaadd479d2716b61d1ca9704c29d9b4ab860ca6893ec05341d25e1af7