Malicious PDF — malware analysis report

Static analysis result for SHA-256 478331b8490d8a64…

MALICIOUS

PDF

66.3 KB Created: 2020-12-08 18:39:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-20
MD5: 83e365e57dfa565888c03eb0486ce48a SHA-1: 127857d5089287acaa2812f265ed5bb4d933b935 SHA-256: 478331b8490d8a64892df448f23fae0dbd43b7706b1965ecf32d6bd2cddb0925
254 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://gettraff.ru/wb?keyword=libero%20tracking%20sheet%20ncaa In PDF document text
    • https://static.s123-cdn-static.com/uploads/4486042/normal_5fca60e393b37.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388620/normal_5fa0a9d774ef0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370319/normal_5fa4750912376.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380859/normal_5f9db394928e7.pdfIn PDF document text
    • https://nigikejogu.weebly.com/uploads/1/3/4/9/134902550/rasufenubogovobup.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449996/normal_5fc34bd1cc678.pdfIn PDF document text
    • https://poroxokinawutaj.weebly.com/uploads/1/3/4/5/134507376/a7e1b9c9159712.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416316/normal_5f95d4dde11f4.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/dae148da-eee1-4cd6-887a-b59415ad46fa/old_minecraft_launcher_jar.pdfIn PDF document text
    • https://s3.amazonaws.com/zevutebulaworel/sesamiroxezijibilomefa.pdfIn PDF document text
    • https://s3.amazonaws.com/vavabi/sarutijirogabopav.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_off0000c812.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC812 5176 bytes
SHA-256: 3a2bf677167a8e548c073fd6f0e6e6707649167b1999714bc025c4d8a638ab68
font_01_sfnt_off0000d9af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9AF 10256 bytes
SHA-256: febaa5179cccec3de9c894fc5c6c6ab29606495d8d8a714c46954b5c5f12c213