Malicious PDF — malware analysis report

Static analysis result for SHA-256 dcbbd9a9ca6b7112…

MALICIOUS

PDF

36.4 KB Created: 2020-09-18 18:03:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8627f44f09da85b72f2b1cb547c02156 SHA-1: 44f6096f50bd85bf7307d2b85e14fdbd27300a50 SHA-256: dcbbd9a9ca6b7112993b73693f97c3c3c38d5b69a250c6bc8fcab040e8fb1490
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file exhibits characteristics of a link farm, embedding numerous URLs. One critical heuristic identified a link to known malicious redirector infrastructure, specifically 'https://ttraff.club/wix?keyword=wheels+lyrics+steve+moakler'. Another heuristic flagged a mass external PDF link farm, with URLs like 'http://koromusud.hipsterleaks.com/uploads/1/3/0/9/130969627/nubadozogawifidenig.pdf'. These findings strongly suggest the document's purpose is to lure users to malicious sites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://ttraff.club/wix?keyword=wheels+lyrics+steve+moakler In PDF document text
    • http://koromusud.hipsterleaks.com/uploads/1/3/0/9/130969627/nubadozogawifidenig.pdfIn PDF document text
    • http://zuzugez.happinessretreatsb.com/uploads/1/3/1/4/131407492/b1348cbe6b.pdfIn PDF document text
    • http://sisamuli.pupplesapp.com/uploads/1/3/1/4/131407629/wanuk.pdfIn PDF document text
    • http://files.lansingtownshipmn.org/uploads/1/3/2/6/132696335/321148.pdfIn PDF document text
    • http://mogibaziw.estesparkeventscomplex.com/uploads/1/3/0/7/130739553/siponolalunawameb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://527fef7d-e4a6-442e-a9ec-f6881f90f899.filesusr.com/ugd/5b5da7_713254ba1a66463f803313722f183962.pdf?index=trueIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9898/8949/files/birabugatokozogizami.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9236/9823/files/sahore_bahubali_song_mr_jatt.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0443/8809/0022/files/deziw.pdfIn PDF document text
    • https://ad5409b2-4507-49b4-a250-53c45283c145.filesusr.com/ugd/4733ca_5d34ba276d384c0c991dfa2dde218a9c.pdf?index=trueIn PDF document text
    • https://0ae15c5d-4db7-449d-9e20-4c49a3a8a233.filesusr.com/ugd/479fa9_05ab1e051eb24c14ac15d31aa3467c13.pdf?index=trueIn PDF document text
    • https://f8305235-4175-4ed9-b2f4-a877557815f8.filesusr.com/ugd/04e6f9_41be515ff1d845429d550608de7439f7.pdf?index=trueIn PDF document text
    • https://e4340fb1-6307-4e6a-bd66-2235025d4aba.filesusr.com/ugd/1e557c_84695872ed5846e8bdc5b642d4d50cbf.pdf?index=trueIn 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 4

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005141.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5141 5280 bytes
SHA-256: 3a31a2e1e53eb4f126b5d3aa40667b5f8b3205b06869cef19ccc500f7f6685e3
font_01_sfnt_off0000631c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x631C 9908 bytes
SHA-256: 9d6fcf89b1b268c1b5dc1695e0232af70fae59909de5e6f189128fc6940d2b21

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