Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb94d6d9f9a65d33…

MALICIOUS

PDF

47.8 KB Created: 2020-05-23 08:19:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d82a5bdb1056dafcf6168ebffa68ce25 SHA-1: 6004816dc4fb73a1f23328ff67014a1f0eb46b1e SHA-256: cb94d6d9f9a65d337694e0dc9dcb460aa1eed6d4f2e138245cd9ecf6e3dc0ba2
96 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, identified as a 'PDF_SEO_LINK_FARM' heuristic. The document body, though partially corrupted, contains text related to 'international business' and is generated by wkhtmltopdf, suggesting a lure for users interested in business topics. The primary function appears to be directing users to a multitude of other PDF documents hosted on various domains, potentially for SEO manipulation or to serve as a distribution point for further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://medisinskutstyr.com/uploads/1/3/0/9/130969220/130969220.html#international+business+the+challenges+of+globalization+6th+edition PDF link annotation
    • http://indoorclimatesolutiontn.com/uploads/1/3/0/5/130539125/1627600.pdfIn PDF document text
    • http://deborahkauffman.com/uploads/1/3/0/3/130379285/82df5b41d6.pdfIn PDF document text
    • http://pmcpaintingscom.com/uploads/1/3/0/2/130287893/04267442c.pdfIn PDF document text
    • http://drakesweather.com/uploads/1/3/0/5/130588763/xepevinufenod-tapesesa-varenujem-xurejaditativ.pdfIn PDF document text
    • http://guiltypleasuresnovelties.com/uploads/1/3/1/4/131455198/fazavuxokagoma.pdfIn PDF document text
    • http://cardtharsis.com/uploads/1/3/0/4/130436285/xeroparadanubu.pdfIn PDF document text
    • http://madbuckoutdoors.com/uploads/1/3/0/5/130589320/137541.pdfIn PDF document text
    • http://nestandnookdesign.com/uploads/1/3/1/8/131857241/5742997.pdfIn PDF document text
    • http://thepathofservice.org/uploads/1/3/0/5/130540493/319619494b0.pdfIn PDF document text
    • http://earthgemz.com/uploads/1/3/0/8/130814280/7294246.pdfIn PDF document text
    • http://ironlabconstruction.com/uploads/1/3/1/8/131856177/01ec823722.pdfIn PDF document text
    • http://butjob.com/uploads/1/3/1/0/131069806/bb2dd8116.pdfIn PDF document text
    • http://importadorachedomulas.com/uploads/1/3/1/1/131164239/wijulaf-musexeweb-gawezodo.pdfIn PDF document text
    • http://christinamaupin.com/uploads/1/3/0/6/130621865/1d182a5159d0f3f.pdfIn PDF document text
    • http://tarotlisa.com/uploads/1/3/1/4/131409024/4255023.pdfIn PDF document text
    • http://adgermanwarehouse.com/uploads/1/3/1/3/131384142/4704017.pdfIn PDF document text
    • http://afterlifetvnetwork.com/uploads/1/3/0/5/130588503/fupijafasoropex-lusegopaki.pdfIn PDF document text
    • http://creatingspaceyourway.com/uploads/1/3/0/7/130739678/d420b.pdfIn PDF document text
    • http://fredjack.com/uploads/1/3/0/9/130969053/f5689b8c3463776.pdfIn PDF document text
    • http://agilbertphotography.com/uploads/1/3/0/2/130288498/6005941.pdfIn PDF document text
    • http://simpleedesign.com/uploads/1/3/0/7/130740497/nizafi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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 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_off00008d6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D6A 10984 bytes
SHA-256: 62eb643da3a3147e6e3f8761892c50c934996630fdd0f3eb18381655e8e12e6a

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