Malicious PDF — malware analysis report

Static analysis result for SHA-256 a375a3401f5edd8b…

MALICIOUS

PDF

33.9 KB Authoring application: Solid Converter PDF
MD5: 987375a37ad3ffbb883cba051fcb62c5 SHA-1: 4277cf6632d67a24ad2357ef70d4bda49d23b3da SHA-256: a375a3401f5edd8bf237c6af6577505410c84c81797878e85ba904dfb8d10b8d
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links to external PDF documents hosted on various domains. The heuristic 'PDF_SEO_LINK_FARM' indicates this is a link farm, and ClamAV detected it as 'Pdf.Phishing.TtraffRobotInstall-7605656-0'. The ML classifier also strongly flagged it as malicious. The primary attack pattern involves redirecting users to these external links, likely for phishing or malware distribution.

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://villascotti.com/uploads/1/3/0/5/130588506/6411710.pdf
    • http://taurusbulldesigns.com/uploads/1/3/0/5/130539182/2467749.pdf
    • http://sarahbrockway.com/uploads/1/3/0/6/130605270/8851d19332f7.pdf
    • http://sblimexprnce.com/uploads/1/3/0/6/130639571/vesetek_tawolafatusosej_lopobixuw.pdf
    • http://howlingmoonfox.com/uploads/1/3/0/7/130739936/4392391.pdf
    • http://psicologiapublica.org/uploads/1/3/0/6/130604151/1a3911209.pdf
    • http://ekki.co/uploads/1/3/0/2/130288381/redulo_nulazozunomapob_biloriki.pdf
    • http://dalexanderward.net/uploads/1/3/0/4/130483957/fajutewegeridosomit.pdf
    • http://gmtenniscenter.com/uploads/1/3/0/8/130814681/1630664.pdf
    • http://immediate-insight.com/uploads/1/3/0/5/130551536/944195.pdf
    • http://willowwolffurnishings.com/uploads/1/3/0/3/130324248/xixilunu-fegelesevub.pdf
    • http://communitydevelopmentinc.org/uploads/1/3/0/8/130874482/kuxuxa.pdf
    • http://mitchelangelo.de/uploads/1/3/0/2/130273845/tosoxuvulupaxo.pdf
    • http://stokesed508webpage.com/uploads/1/3/0/6/130605278/130605278.html#html5+book+pdf+free
    • http://gmtenniscen

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002da0.bin
9e48634fdfec2a73c05136671b214986bf9c0a285d5373a093573d9c1695d34d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2DA0 7224 bytes

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