Malicious PDF — malware analysis report

Static analysis result for SHA-256 81b64719b5b0103a…

MALICIOUS

PDF

34.3 KB Authoring application: pdf-parser First seen: 2026-05-09
MD5: bd320c7c8bc969971eaa6c4ccb4368fb SHA-1: ccde35faaeba75474a1a1d2c7a0121c5ae3494ed SHA-256: 81b64719b5b0103a3919eb517d628dd641a3a29b14e007622cf746ee7a4e2739
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded external links, as indicated by the PDF_SEO_LINK_FARM heuristic. These links point to various domains, suggesting a coordinated effort to distribute content or potentially malicious files. The ML classifier and ClamAV detection strongly support a malicious classification, likely related to phishing or SEO abuse.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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.
  • 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://mindfulnesshoy.com/uploads/1/3/0/2/130272339/09b8ebc7fd3f9e.pdf In PDF document text
    • http://sarasotabicycles.com/uploads/1/3/0/5/130551253/7237727.pdfIn PDF document text
    • http://jantalist.net/uploads/1/3/0/4/130483354/zinareguripego.pdfIn PDF document text
    • http://makemoneystreaming.com/uploads/1/3/0/6/130639448/7260575.pdfIn PDF document text
    • http://youngatartmn.com/uploads/1/3/0/5/130589313/8287254.pdfIn PDF document text
    • http://wtoservices.com/uploads/1/3/0/3/130323555/ccaec6ac9.pdfIn PDF document text
    • http://puertorican-bondlosses.com/uploads/1/3/0/4/130483364/2589037.pdfIn PDF document text
    • http://odroslore.com/uploads/1/3/0/7/130739446/412016.pdfIn PDF document text
    • http://mymountains.fr/uploads/1/3/0/6/130622103/nalixumugenav.pdfIn PDF document text
    • http://lovefoundationproject.com/uploads/1/3/0/5/130588427/627206.pdfIn PDF document text
    • http://ankezimmermann.ca/uploads/1/3/0/6/130620672/130620672.html#ielts+speaking+task+2+questions+and+answers+pdfIn PDF document text

Related samples 1

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_off0000301f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x301F 7928 bytes
SHA-256: 4e95cbf2fc0d0a78e9e371e5d474ddbe298290915ec797da2b146a7ec0b3a48d

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