Malicious PDF — malware analysis report

Static analysis result for SHA-256 d51b6ca3a51a6089…

MALICIOUS

PDF

33.7 KB Authoring application: PDF Studio
MD5: 1d246024a15e06f789a49886d18f42df SHA-1: f45417b7f3fc64deb8cd671bb1483668ce806790 SHA-256: d51b6ca3a51a60893e5ef1165e615bd7c865d1a740ddb07da06242153140b6ba
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of embedded links to external PDF documents, a technique often used to obscure malicious intent or distribute further payloads. The document body, though partially corrupted, suggests a lure related to a sports league schedule, which is a common tactic for phishing or malware delivery. The ClamAV detection and ML classifier strongly indicate maliciousness, likely related to phishing or traffic redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 3

  • 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.
  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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://miavitta.com/uploads/1/3/0/6/130604558/434e34dfd0c0f2.pdf
    • http://kelsweet.com/uploads/1/3/0/4/130475955/2a7868c1e.pdf
    • http://cestagift.com/uploads/1/3/0/2/130291373/2576923.pdf
    • http://navyjunkremoval.com/uploads/1/3/0/5/130544379/8623046.pdf
    • http://hello-baby-toys.com/uploads/1/3/0/6/130639675/130639675.html#calendario+completo+de+la+liga+espa%C3%B1ola+2018-19

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00000fc0.bin
0f2e6130058cc9463fc45815f8bb8c18b6cb8457447e39669e54314af0e5ce3f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFC0 7884 bytes

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