Malicious PDF — malware analysis report

Static analysis result for SHA-256 0cfae825916d5bb4…

MALICIOUS

PDF

42.6 KB Authoring application: Solid Converter PDF
MD5: 8bcf6625f3d5aa37599cee0fbc97e702 SHA-1: 9e9c5df512d64fde91fe09f8ff66c1470a4764dd SHA-256: 0cfae825916d5bb4591583f5f17f6f652907c914d6e52f924d37aa4b339a0308
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various domains, suggesting a campaign to drive traffic or distribute additional content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or spam distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://aminomassage.com/uploads/1/3/0/6/130640078/waxuwig_fenupoz_xumufovaxadif.pdf
    • http://thekookas.com/uploads/1/3/0/5/130550796/2033345.pdf
    • http://mycounselingsa.com/uploads/1/3/0/6/130604233/fufuravavajiwedebofu.pdf
    • http://cupvilanova.org/uploads/1/3/0/4/130435597/lokawene-luvel-bapigofixunok.pdf
    • http://nevenann.com/uploads/1/3/0/7/130739596/6014699.pdf
    • http://installatiebedrijf-altena.com/uploads/1/3/0/5/130589244/9318587.pdf
    • http://benkregel.com/uploads/1/3/0/6/130620293/130620293.html#typhoid+vaccine+birth+control

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000118a.bin
12c8616ffabbd37079145488a4b09f2de4cfc739a0f735f057677da6f85e1852		 pdf-font-stream PDF embedded font (sfnt) at offset 0x118A 9396 bytes

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