Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5fd62d77277171c…

MALICIOUS

PDF

38.0 KB Authoring application: Adobe PDF Library 9.0
MD5: a9128b95a2633f21fc2e9291fa8233f3 SHA-1: c82070a034cc0d829dc699e59efddacc9cb6c54c SHA-256: b5fd62d77277171c2b37a4e532eeaa0fcf93ec35b369f0e08e6fdb1faa274145
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. This suggests a malicious intent to manipulate search engine results or redirect users to potentially harmful content. The ClamAV detection and ML classifier further support the malicious nature of the file. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://centerofpeacefulendeavors.com/uploads/1/3/0/7/130739933/4528707.pdf
    • http://msert.net/uploads/1/3/0/2/130289242/698808.pdf
    • http://bantunation.ca/uploads/1/3/0/6/130620633/gupopaxagobobonan.pdf
    • http://equitytradinglabs.org/uploads/1/3/0/7/130775965/velamebopide.pdf
    • http://buysellvancouverhome.com/uploads/1/3/0/7/130776478/8838808.pdf
    • http://kelseyleon.com/uploads/1/3/0/6/130621110/rorewiw.pdf
    • http://bgooddesignllc.com/uploads/1/3/0/5/130543198/dinagukitilevetil.pdf
    • http://care-association.info/uploads/1/3/0/8/130874523/batigapinif-lutelekegu.pdf
    • http://begip.neupustishans.ru/uploads/2020/01/28/7c204a.pdf
    • http://motivationalkeynotespeakeralberta.com/uploads/1/3/0/2/130288383/bariwetolo-kavixakogipefup-vumukijuwuriw-rudevemuw.pdf
    • http://allamericandogexpo.com/uploads/1/3/0/6/130621060/130621060.html#rockwell+plc+classes

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001253.bin
b3e8e11139bc8121365491d48592004d919f75249534d593e1c9483d301491e9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1253 7568 bytes

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