Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ac1ba64bdd6283e…

MALICIOUS

PDF

39.2 KB Created: 2020-03-11 14:30:52 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2026-05-08
MD5: 6f8edf8c7b2421dfee78c7168a52d839 SHA-1: e53edd95e56b6400319ec9f27dee273326a6f334 SHA-256: 4ac1ba64bdd6283efb8fa3dc4571d8e6591d3f069b292977e9352813e557bccc
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, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various domains, suggesting a link farm or SEO manipulation tactic. The embedded URLs are likely intended to redirect users to malicious content or further phishing pages. No scripts were extracted from this sample, limiting the ability to determine specific payload delivery mechanisms.

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://129.bpmtc.com/uploads/1/3/0/2/130287882/130287882.html#module+pool+in+sap+abap+tcode PDF link annotation
    • http://annabellucienne.org/uploads/1/3/0/6/130621178/jiraxuxex.pdfIn PDF document text
    • http://aviationenglishalliance.com/uploads/1/3/0/3/130324390/turuxuja-wuxife.pdfIn PDF document text
    • http://villagecarehenfield.co.uk/uploads/1/3/0/7/130775685/de27027cd00.pdfIn PDF document text
    • http://cooperwerks.com/uploads/1/3/0/5/130542852/jetitalerasaxegovud.pdfIn PDF document text
    • http://brokeitguy.com/uploads/1/3/0/7/130740177/jureba_bikenoxefokof_sotun.pdfIn PDF document text
    • http://countrystylebbqcatering.com/uploads/1/3/0/6/130639672/gutafomuk.pdfIn PDF document text
    • http://hostmaster.kaitlynschatch.com/uploads/1/3/0/7/130775827/9324177.pdfIn PDF document text
    • http://toeandheelreality.com/uploads/1/3/0/6/130639481/5751125.pdfIn PDF document text
    • http://meetlia.store/uploads/1/3/0/8/130813369/bivizizozavib-komalisesimumiw-fawojuze.pdfIn PDF document text
    • http://admin.pausetherapies.com/uploads/1/3/0/5/130539125/vosojida_dofeg.pdfIn PDF document text
    • http://mygameflex.com/uploads/1/3/0/4/130435947/5c9568.pdfIn PDF document text
    • http://mikewilliamslivemusic.com/uploads/1/3/0/5/130550711/56cedb.pdfIn PDF document text
    • http://www.manosconcarino.com/uploads/1/3/0/2/130291416/5789c464082.pdfIn PDF document text
    • http://tools.guardianautosales.com/uploads/1/3/0/3/130312984/xojafenibudoso.pdfIn PDF document text
    • http://myacrepairorlando.com/uploads/1/3/0/7/130775710/5341280.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

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007159.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7159 7760 bytes
SHA-256: 6d35f4a9198c5314c1295ac8fbb59f6ebcb41f90c23977f7c447c1e2c642fc9f