Malicious PDF — malware analysis report

Static analysis result for SHA-256 f526066597b95539…

MALICIOUS

PDF

35.3 KB Authoring application: Adobe PDF Library 9.0 First seen: 2026-05-07
MD5: 13a8080c76026404b926692c2507ddaf SHA-1: 98f73f39ab6ef869f1d2e68d7dce328cdd1199fb SHA-256: f526066597b95539b7cee4ba34b8c47fabdb1043fd6316520f4e5b1770752379
192 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to external PDF files, a technique commonly used for SEO poisoning and phishing. The ClamAV detection and ML classifier strongly indicate malicious intent. The document body, though partially corrupted, mentions 'Comparative adjectives and adverbs pdf' and includes the URLs, suggesting a lure to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 4

  • 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.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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://buckhillcoffee.com/uploads/1/3/0/6/130603761/nugote-kisopefino-lisob.pdf In PDF document text
    • http://bendavidsonministries.com/uploads/1/3/0/5/130588962/9aad28ce88f8e6.pdfIn PDF document text
    • http://abundantlivingpsychologicalandcoachingservices.org/uploads/1/3/0/7/130776886/xazedugu.pdfIn PDF document text
    • http://northeastfjord.com/uploads/1/3/0/2/130271245/tamalomava.pdfIn PDF document text
    • http://sisstar289.com/uploads/1/3/0/3/130313064/jisefix.pdfIn PDF document text
    • http://absystemsllcscam.com/uploads/1/3/0/7/130738978/130738978.html#comparative+adjectives+and+adverbs+pdfIn 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_off000010a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A6 7520 bytes
SHA-256: 36a5895d39e22d9a72fc406665d56b70f2ccfb9a5f1dd5ee0b37edd9e3088398

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