Malicious PDF — malware analysis report

Static analysis result for SHA-256 154458960d9bd8e4…

MALICIOUS

PDF

60.3 KB Authoring application: ImageMagick
MD5: a09cd2bb1c2b1ee58a16d9f567aa0667 SHA-1: 2dd84a897f192034948e28e3c7a904b9ae8b80c0 SHA-256: 154458960d9bd8e4a99d91d027c0766d27310acdf90eb776badb8b60d861de83
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded external links, a technique often used for SEO manipulation or to distribute further malicious content. ClamAV detected this file as Pdf.Phishing.TtraffRobotInstall-7605656-0, and an ML classifier also flagged it as malicious. The embedded URLs are the primary indicators of compromise, suggesting a phishing or content distribution campaign.

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://jejax.market-lm.com/uploads/2020/01/27/98aaac703.pdf
    • http://madameallen.org/uploads/1/3/0/3/130323430/kekeduvovuj_nanalisuzedi_rusavekumumoj_mobusevef.pdf
    • http://skmmglobal.us/uploads/1/3/0/5/130546574/4050415.pdf
    • http://sitibaik.ru/uploads/2020/01/28/pelopetudi.pdf
    • http://lut.splitvolgograd.ru/uploads/2020/01/27/2529358.pdf
    • http://sweetestdreams.org/uploads/1/3/0/6/130621937/8441508.pdf
    • https://tilusabi.weebly.com/uploads/1/3/0/4/130494289/4939041.pdf
    • https://ruvuriwi.weebly.com/uploads/1/3/0/5/130551095/pusikowisiwofelut.pdf
    • https://tubajugogikawa.weebly.com/uploads/1/3/0/4/130436137/2019920.pdf
    • http://amitsheth.net/uploads/2020/01/27/389842.pdf
    • http://kellenkellenkellen.com/uploads/1/3/0/4/130483770/sorigapavupumikomup.pdf
    • http://duwe.gurmen.ru/uploads/2020/01/28/1201757.pdf
    • http://oenophiles-mauritius.com/uploads/1/3/0/6/130621176/130621176.html#t%E1%BA%A1o+kho%E1%BA%A3ng+c%C3%A1ch+tab
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001530.bin
07d1e38b089ed7a942624e2ca9086eef7e043ad33ad96a5bce00160e8aaa0454		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1530 11088 bytes
font_01_sfnt_off00009c6e.bin
cda0e8cbe883d3a8eb9241267c4079593d808889cf0fc86d92b2458215b22438		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9C6E 24568 bytes

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