Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3b0e22dd43f2aa5…

MALICIOUS

PDF

37.7 KB Created: 2020-03-07 11:53:33 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2026-05-08
MD5: 59c94ce5c12cf922b2067402d1d852ef SHA-1: 950ed68140f571a0da400fe6bc02989615a2b55e SHA-256: c3b0e22dd43f2aa5b884dd8763415ed4331d5c63de1a1ab2b8687e5fd5e27a11
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a large number of external links to various domains, a technique often used for SEO spam or to distribute malicious content. The document body itself is heavily obfuscated but contains references to 'iosh risk assessment filled form' and the wkhtmltopdf generator, suggesting a lure document. The primary attack pattern involves redirecting the user to a link farm, likely to host further malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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 http://sean--bre.rominastiebenphotography.com/uploads/1/3/0/5/130539105/130539105.html#iosh+risk+assessment+filled+form PDF link annotation
    • http://egorelease.com/uploads/1/3/0/6/130605258/90a521128a.pdfIn PDF document text
    • http://brazilstars.soccer/uploads/1/3/0/2/130272500/ximowuvipatomoz.pdfIn PDF document text
    • http://uvahousinguniversitylife.com/uploads/1/3/0/2/130288333/3811723.pdfIn PDF document text
    • http://harvestingsoulsgospeltrio.com/uploads/1/3/0/3/130313070/jinibikusox.pdfIn PDF document text
    • http://www.centerstagetheatercompany.org/uploads/1/3/0/6/130604046/9014cfce4b8.pdfIn PDF document text
    • http://www.wallbrosdrywallservices.com/uploads/1/3/0/4/130484005/ledegosogid_duxuvarejusegi_rawuxakinukuxim.pdfIn PDF document text
    • http://www.mariamerry.com/uploads/1/3/0/2/130271054/208440.pdfIn PDF document text
    • http://petfolder.net/uploads/1/3/0/6/130621135/3991755.pdfIn PDF document text
    • http://samuelwashburn.com/uploads/1/3/0/6/130604980/wijugetapaleva.pdfIn PDF document text
    • http://msmohp.org/uploads/1/3/0/6/130605237/rozid-terezujibenod.pdfIn PDF document text
    • http://cpanel.mutebuzz.com/uploads/1/3/0/7/130739121/belek.pdfIn PDF document text
    • http://dreamcatalyst.org/uploads/1/3/0/4/130435803/zixuvovuri.pdfIn PDF document text
    • http://www.determinedtolearn.net/uploads/1/3/0/7/130740235/0aa574592584.pdfIn PDF document text
    • http://crosbyirontonmusic.org/uploads/1/3/0/4/130435577/tefezugixojuw-wurukewokoxov.pdfIn PDF document text
    • http://friendsofstmarksprimary.org/uploads/1/3/0/8/130874652/3040407.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

Related samples 3

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

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006b13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B13 7732 bytes
SHA-256: 3ec80e2a497577f46f9aa7159582fd145252d2d8d579bf8a8808ac09c4582ce2

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