Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e249f890af98933…

MALICIOUS

PDF

31.8 KB Authoring application: OpenOffice.org
MD5: f15a7c0ad546117f069fc56c49db2c53 SHA-1: 50d44152fb315cb3bfd498f4b6b5ede568421b22 SHA-256: 5e249f890af989338a59d82d169acbf6f6ccb6863959eef939c06788dc99246c
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. ClamAV also detected this as Pdf.Phishing.TtraffRobotInstall-7605656-0, suggesting a phishing or malicious redirection attempt. The document body contains garbled text and URLs, reinforcing the malicious nature of the file.

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://michiganlegalmalpracticequestions.com/uploads/1/3/0/2/130292148/wugadamerabilen-vuzakefebafuzaw.pdf
    • http://nationalpostcards.ie/uploads/1/3/0/2/130289625/5985697.pdf
    • http://claverackisworking.com/uploads/1/3/0/5/130589049/ludivuku.pdf
    • http://crval.com/uploads/1/3/0/6/130620759/tisekazawa-kukudawev.pdf
    • http://tim.zonaspasalon.ru/uploads/2020/01/28/8744211.pdf
    • http://kixolu.manvs.ru/uploads/2020/01/27/f6b9f53d4.pdf
    • http://thehnossaproject.com/uploads/1/3/0/6/130639980/130639980.html#creepy+crawlies+sheet+music+clarinet

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001112.bin
62739c5814537733c6e2b8e84897cfc79a11b33b4211c8b12968e7bae36c90ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1112 8172 bytes

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