Malicious PDF — malware analysis report

Static analysis result for SHA-256 17102f5d41831bd7…

MALICIOUS

PDF

47.3 KB Authoring application: PDFBox
MD5: e3576910f464c72982d5c1de00d9a4e4 SHA-1: 61d69fa42a736c6f46b68f95ce67f98928f9ade9 SHA-256: 17102f5d41831bd72d469d5852ddc904132b3f2359cd4afd557caa5b4b6b86dc
152 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to other PDF files. The document body, while containing game-related text, also embeds several URLs, suggesting a lure to download further malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware 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://bridgewist.com/uploads/1/3/0/4/130483980/pudevuvip_susefoz.pdf
    • http://untabvel.store/uploads/1/3/0/6/130620955/soliz.pdf
    • http://polohouston.com/uploads/1/3/0/5/130588533/5327557.pdf
    • http://messianicmetis.ca/uploads/1/3/0/6/130620266/7083012.pdf
    • http://theelfbox.com/uploads/1/3/0/2/130272355/130272355.html#warhammer+2+total+war+bretonnia+guide
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001008.bin
27774fdbab7030ab8d842599215e0330a44097eaaac973bbada6f8390eb2aff1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1008 8372 bytes
font_01_sfnt_off0000726c.bin
5d7ebd720715cd86529581f1d40cc643f68465477bd430d4be5ff736bc95f798		 pdf-font-stream PDF embedded font (sfnt) at offset 0x726C 16268 bytes

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