Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f01623c538dc853…

MALICIOUS

PDF

69.7 KB Created: 2020-11-27 02:28:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: c9eca00dcc193914485a722240cbc9ce SHA-1: d8e7fdadce56ee5e47ec514d6e70335d8992cf8a SHA-256: 2f01623c538dc853e78804228c01af4a4fbde64eff76703f3e994279a1b9e96e
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, many of which are disguised as SEO content related to game cheats. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, suggesting a link farm or spamming operation. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution via these links.

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 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.
  • 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://trafftec.ru/strik?utm_term=forge+of+empires+cheats+android PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4393900/normal_5f908dc43b226.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393779/normal_5fa9ace8512fa.pdfIn PDF document text
    • https://xuwosanilenerev.weebly.com/uploads/1/3/4/9/134900173/0bca4d2441.pdfIn PDF document text
    • https://kenometiwu.weebly.com/uploads/1/3/4/3/134340836/tawobejuzuvun.pdfIn PDF document text
    • https://gekitudijelal.weebly.com/uploads/1/3/4/2/134265938/xixazebof_gatefabuzid.pdfIn PDF document text
    • https://mugilofovoki.weebly.com/uploads/1/3/4/6/134616553/zabapunu.pdfIn PDF document text
    • https://kovumagamu.weebly.com/uploads/1/3/4/5/134578336/rifetoradil.pdfIn PDF document text
    • https://lenukadizavubo.weebly.com/uploads/1/3/4/4/134492519/e76cf2a8c9c0ff.pdfIn PDF document text
    • http://elitegames.top/ForgeOfEmpiresIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/zosevid/cat_mate_c3000_feeder_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/sixenogafopoj/haspel_suit_company.pdfIn PDF document text
    • https://s3.amazonaws.com/fapaga/76925981459.pdfIn PDF document text
    • https://s3.amazonaws.com/likadojivivofu/61359502928.pdfIn PDF document text
    • https://s3.amazonaws.com/nonabafat/davugukamit.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/kararemo.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_off0000d0e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0E9 5492 bytes
SHA-256: 49c036037540c25e9789f6b90d0d7d5ec31793a7f6bb5d3a37b2e92613c23e13
font_01_sfnt_off0000e378.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE378 11448 bytes
SHA-256: 7741851102a91b0ff3de813a24b25d1bd99a12b0db501cc9799ce4fc5e68a676

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