Malicious PDF — malware analysis report

Static analysis result for SHA-256 11bf2f1e1f261afe…

MALICIOUS

PDF

43.5 KB Created: 2020-03-08 05:18:15 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2026-05-08
MD5: 4b9f0fcdb7f5566ef8720cdeac604c49 SHA-1: df7de069c08250e1c708d9830a806ec7c7442823 SHA-256: 11bf2f1e1f261afe42ddc421ef7097f0851aa0b4c600a8f940f843d2d4691121
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file contains a large number of external links, identified as a link farm, suggesting a tactic for SEO manipulation or to distribute further malicious content. The ML classifier strongly indicated maliciousness, and the presence of numerous external URIs supports this assessment. No scripts were extracted, but the sheer volume of outbound links is highly suspicious.

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://www.xmo1.com/uploads/1/3/0/6/130604955/130604955.html#fluid+volume+excess+in+acute+renal+failure PDF link annotation
    • http://listenupmedia.net/uploads/1/3/0/7/130738881/woweran_rikozosaf_sijagisagoriv_xopoxevenitega.pdfIn PDF document text
    • http://classicgermancarsforsale.com/uploads/1/3/0/6/130639946/fajinojaxawezil.pdfIn PDF document text
    • http://the-wordsmith-academy.com/uploads/1/3/0/4/130483761/8733297.pdfIn PDF document text
    • http://pensacoin.com/uploads/1/3/0/3/130313196/tuvijatu_romopezexirabig_sezogokisonag.pdfIn PDF document text
    • http://hewhodieswiththemostrunswins.com/uploads/1/3/0/4/130435582/noxemimes.pdfIn PDF document text
    • http://zuixinhuangguanwangzhiquanxunwang.br3h.com/uploads/1/3/0/7/130740297/kasiropifovuritevi.pdfIn PDF document text
    • http://renemogensen.net/uploads/1/3/0/3/130379295/lowakelorozi.pdfIn PDF document text
    • http://happyrecipebox.com/uploads/1/3/0/2/130289692/ranitolijuli.pdfIn PDF document text
    • http://www.theferdaris.com/uploads/1/3/0/7/130739755/6773619.pdfIn PDF document text
    • http://shaynehullart.com/uploads/1/3/0/5/130589400/7817d9a35dd0a.pdfIn PDF document text
    • http://myfirsthustle.com/uploads/1/3/0/5/130550732/1839544.pdfIn PDF document text
    • http://www.iletranslates.com/uploads/1/3/0/4/130483492/9169599.pdfIn PDF document text
    • http://dream-job.site/uploads/1/3/0/6/130621654/8097670.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
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicenseIn PDF document text

Related samples 8

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_off000073eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73EB 8668 bytes
SHA-256: f026928fc0dddaf08ef0627c8236de533aca68692d6c92298b074ca4e9e000c8
font_01_sfnt_off00009527.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9527 2600 bytes
SHA-256: 41d5c9cb4d60b7530e3cfd93a78efd430fe179aa57a8296e74fb8a971da4b0ee

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