Malicious PDF — malware analysis report

Static analysis result for SHA-256 5508e258dfe3d419…

MALICIOUS

PDF

77.7 KB Created: 2020-11-16 18:33:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-04-04
MD5: 1ee0adb57881b61c9e7f4516e1e9255f SHA-1: a57a00441bbb616e9d39038f01b011b39a5b21ce SHA-256: 5508e258dfe3d41971ddf6e521241c15748168a60d6c912f08df8f207650d84d
254 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
  • 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://traffmen.ru/123?utm_term=gta+san+andreas+apk+1.08+obb In PDF document text
    • https://rewemekekebaz.weebly.com/uploads/1/3/1/4/131406535/c1fb6a0c05ba3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374708/normal_5f9178eab2bfd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365591/normal_5f870047a3539.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369774/normal_5f8d80d5b8b5b.pdfIn PDF document text
    • https://s3.amazonaws.com/sojebelevenex/68529910888.pdfIn PDF document text
    • https://s3.amazonaws.com/potevip/kings_and_knights_eg_crossword.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370785/normal_5faa7b1e15e2c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413462/normal_5f98f5f985d1e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377116/normal_5fa3e824a005e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387582/normal_5f9c477566ac2.pdfIn PDF document text
    • https://s3.amazonaws.com/bokofapig/pifetajiki.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000ca83.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000ca83.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://dejavu.sourceforge.netIn extracted file (stream_005_off00010086.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (stream_005_off00010086.bin)
    • http://scripts.sil.org/OFLIn extracted file (font_00_sfnt_off0000ca83.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off00010086.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x10086 23608 bytes
SHA-256: 7c0a0dcbcfc9f18a9fa5c6fd456ef8a2c99bcecdee1636feed2b02d8ae20b67a
font_00_sfnt_off0000ca83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA83 5576 bytes
SHA-256: f72ded71e9182cca52df07ad5e45871368a28e0de71a05125b53f4e6012db93c
font_01_sfnt_off0000dd8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD8E 10112 bytes
SHA-256: 57e6e51959c3e9701ac93320d1652782615020dc1058666d5ec8885f38647262