Malicious PDF — malware analysis report

Static analysis result for SHA-256 35ad192bba33a0cf…

MALICIOUS

PDF

75.2 KB Created: 2021-02-01 09:59:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: b607e8c6ce2df225a81734d9da495b44 SHA-1: f275d68c9e3bb30dddf1fd6a2fa11430c9fef88d SHA-256: 35ad192bba33a0cfa48daa936ef1498d4687497c0d908f4c4ca104adfa882241
196 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains a large number of external links, many of which appear to be part of an SEO link farm designed to redirect users. The primary URL identified, https://seumenha.ru/aws?utm_term=best+compact+suv+manual+transmission, is flagged as a redirector, suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://seumenha.ru/aws?utm_term=best+compact+suv+manual+transmission PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4488315/normal_600f03d2619bf.pdfIn PDF document text
    • https://nofiluwovix.weebly.com/uploads/1/3/0/7/130739726/16507.pdfIn PDF document text
    • http://moresukko.ru/707656969309my3x.pdfIn PDF document text
    • http://ebay-coupon.ru/657359737054x49a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413469/normal_6016516501155.pdfIn PDF document text
    • http://eslivdrug.space/pepivazuriwumuzaposazerotkx.pdfIn PDF document text
    • https://cdn.sqhk.co/sixitigoxeto/hBvjiha/business_start_up_funding_northern_ireland.pdfIn PDF document text
    • https://cdn.sqhk.co/gajerivab/YORYjiw/sewevegajarakoxo.pdfIn PDF document text
    • https://cdn.sqhk.co/pemoxeriko/prSeian/6624910335.pdfIn PDF document text
    • http://best-ital.fun/wokagi9tjve.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379054/normal_5ff139351560b.pdfIn PDF document text
    • http://cozyplacefor.rest/40759908041rq379.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/juwofuxufijup/sawuzarasixelinazodifof.pdfIn PDF document text
    • https://s3.amazonaws.com/bibejovixapis/ingilizce_e_anlaml_kelimeler_szl.pdfIn PDF document text
    • https://s3.amazonaws.com/wunupalezozerud/56503484926.pdfIn PDF document text
    • https://s3.amazonaws.com/tirimofufemukat/zazuwojesereruzomomo.pdfIn PDF document text
    • https://s3.amazonaws.com/fifomi/abacus_worksheets_for_level_2.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_off0000e896.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE896 5188 bytes
SHA-256: caa7df2b8e72103b86fd74a7979ec45bb5d80134823fac61358070c9cf692e5b
font_01_sfnt_off0000fa30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA30 10584 bytes
SHA-256: 8727cf3ac5eec740e468db3cc9554c1e5346719ea75ffd4c66b2507cd8e27f73

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