Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6031616b2f6f8b5…

MALICIOUS

PDF

36.1 KB Authoring application: Mobipocket Creator
MD5: cec525d81560565080f9d0f1b3f525f8 SHA-1: e6d35cb6fb4483537a5d39d4eca393e48c09258b SHA-256: c6031616b2f6f8b53e5ce08b769aad2b12bec886ac271f172d0da98ccffe1695
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded URLs, indicating a link farm designed to redirect users to malicious content. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier's high confidence score further support its malicious nature. The primary goal appears to be directing users to external PDF files hosted on various domains, likely as part of a phishing or malware distribution campaign.

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://jizevi.dveri-goodwin43.ru/uploads/2020/01/28/6c8872f7af8e9cc.pdf
    • http://mse2opiodepidemic.com/uploads/1/3/0/4/130436226/f5eb1892c1.pdf
    • http://expopul.com/uploads/1/3/0/7/130739150/matezuno-suruvowilax.pdf
    • http://mhs1983.net/uploads/1/3/0/3/130379218/4a7ad80ed.pdf
    • http://agicole-acces.com/uploads/2020/01/29/jowidivuf.pdf
    • http://beachmedicalservices.com/uploads/1/3/0/3/130323896/tonide.pdf
    • http://soxpal.com/uploads/1/3/0/4/130436513/motixanuvi_ruvulixonux.pdf
    • http://sincerely-amber.com/uploads/1/3/0/6/130603745/kejedazosupedaw.pdf
    • http://myflicktv.com/uploads/1/3/0/7/130776239/a3f29f1557.pdf
    • http://guzledscotland.com/uploads/1/3/0/6/130639298/laxowi.pdf
    • http://nicollefletcher.com/uploads/1/3/0/6/130621554/4570a.pdf
    • http://afaparents.org/uploads/1/3/0/6/130639476/130639476.html#urw+baskerville+narrow+font+free

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001284.bin
0521e93bbb1f022d785c3775858702e545ac3e949d0ba950ce8807dbec462b26		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1284 8732 bytes

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