Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed3c1d65abcf60b3…

MALICIOUS

PDF

88.2 KB Created: 2020-12-24 11:43:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-04-07
MD5: f36da49fb3ec09861fc94989a8485428 SHA-1: 8cfd9acfa93be715cd4069634663b69793fdc05b SHA-256: ed3c1d65abcf60b352f1cf56d833bf462e2cd1f58dfc6a9f842be17ce0e0e455
196 Risk Score

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.
  • 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://trafficel.ru/wb?keyword=cup%20stacking%20challenge%20rules PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4454436/normal_5fb3c6393ab5e.pdfIn PDF document text
    • https://cdn.sqhk.co/jesisuvov/fUw1Zii/42985888352.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366642/normal_5f8fdc5f4a63d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365653/normal_5fc1797c1ebe0.pdfIn PDF document text
    • https://bilewazivabo.weebly.com/uploads/1/3/2/8/132816117/6a259c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450434/normal_5fb9dec158674.pdfIn PDF document text
    • https://s3.amazonaws.com/vonusirukete/arium_lake_johnson_apartments_raleigh_nc.pdfIn PDF document text
    • https://mumerigowijegap.weebly.com/uploads/1/3/4/7/134771458/samebidulifozoj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411512/normal_5fb9685fa11db.pdfIn PDF document text
    • https://zuwodavipufowaf.weebly.com/uploads/1/3/1/4/131408056/a944d2d991e.pdfIn PDF document text
    • https://cdn.sqhk.co/numanazolov/Cjjiy3h/european_golden_boot_standings_2018-_19.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00011c9d.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00011c9d.bin)
    • 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 extracted file (font_00_sfnt_off00011c9d.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011c9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C9D 5164 bytes
SHA-256: 38c200e3d3b014ff2b50e1d229655720de3a401faed58780abd82da79632f219
font_01_sfnt_off00012e27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12E27 11196 bytes
SHA-256: b0bbaf3ad19828674266b4b85b3a6b0e9cae0eb3d30abcb18c25b83ec70c7733