Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6f30e1f32ba839b…

MALICIOUS

PDF

71.2 KB Created: 2020-11-13 18:17:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 371b4afbdbb92b85fcbeb0137a9db040 SHA-1: d774a58fbc74a996bfde8b29fe714069c0f281e7 SHA-256: d6f30e1f32ba839b2c046f2431c1a3ea2cc845d33682403445f09cf2f874b0e1
254 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains multiple heuristics indicating malicious redirector links and a link farm, with a high ML classifier score and ClamAV detection. The embedded URLs, particularly 'https://gettraff.ru/123?utm_term=male+ballet+dancer', are flagged as malicious redirectors. The document body is heavily obfuscated, but the presence of PDF-specific malicious link heuristics strongly suggests a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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/123?utm_term=male+ballet+dancer In PDF document text
    • https://s3.amazonaws.com/solonebosop/69138938647.pdfIn PDF document text
    • https://s3.amazonaws.com/saziwijaxodav/army_jrotc_uniform_standards.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367278/normal_5f8a1cd71e961.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450003/normal_5f9f310304e11.pdfIn PDF document text
    • https://s3.amazonaws.com/zikeko/carer_recognition_act_2010.pdfIn PDF document text
    • https://s3.amazonaws.com/tobobowu/menilevolusitivel.pdfIn PDF document text
    • https://s3.amazonaws.com/muvarelo/matlab_solution_manual.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369656/normal_5f8a9693d4ba9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444630/normal_5faba92386782.pdfIn PDF document text
    • https://s3.amazonaws.com/domegagowevag/silvercrest_espresso_machine_manual.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391903/normal_5f8fdc6f81826.pdfIn PDF document text
    • https://jovikuveditowe.weebly.com/uploads/1/3/0/8/130874612/ledediva-tereja-benuliv.pdfIn PDF document text
    • https://s3.amazonaws.com/falufusu/albion_frost_mage_guide.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c493.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC493 3120 bytes
SHA-256: 16a0685b1af8f7ff3286410c82d065b2ef9dd16f5cc5e004aadb0dd239daad33
font_01_sfnt_off0000cfc6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFC6 4532 bytes
SHA-256: 9eae7a6362c559fe3d94e3bd4bdc661ddcb51ab3934caf2ce72f304cee356768
font_02_sfnt_off0000df30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF30 10312 bytes
SHA-256: 83afd17f65196a7506079f79292adcc4b4476b97180881ee14528a43af16daaa
font_03_sfnt_off000101fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101FA 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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