Malicious PDF — malware analysis report

Static analysis result for SHA-256 47b694cad1cf6be2…

MALICIOUS

PDF

42.1 KB Authoring application: Smallpdf Desktop
MD5: 8ca9895788fdf21040f0792976d058c1 SHA-1: 136812762c5ef51e9e827e31c338c7a4165645d6 SHA-256: 47b694cad1cf6be2043362e59ab4acf4d223b2237000e40a0ac5e29a67b615c5
120 Risk Score

Malware Insights

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

The PDF contains a large number of external links, a common technique for SEO poisoning and phishing. The embedded URLs point to domains that appear to be part of a link farm, designed to redirect users to malicious content. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports the phishing and redirection intent.

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://giresungiyim.com/uploads/1/3/0/6/130639479/4fae078f463f32.pdf
    • http://drgreigltd.co.uk/uploads/1/3/0/4/130476671/4f023ac4be9.pdf
    • http://appliedcleaningtechnologies.com/uploads/1/3/0/6/130605476/969142.pdf
    • http://nursingarmpillow.com/uploads/1/3/0/2/130272648/130272648.html#video+dari+facebook+pc

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00000f79.bin
0de9dd4d7b588c9fc934904c984f40c03476f8a6d68ec5afb6f42c3307ac6812		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF79 7708 bytes
font_01_sfnt_off00005e04.bin
f31c439e28d0137206b91a151f21343900f846ed9ff070250fbe82eb1cc7da1d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E04 16204 bytes

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