Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9574e438d41f60e…

MALICIOUS

PDF

33.9 KB Authoring application: ImageMagick
MD5: 1b0f2522bf42dbbc718f65206d4d4855 SHA-1: daabb640696ed313c67889eae9301b52d600e19a SHA-256: c9574e438d41f60ef0da6ea95be75e38657b16f38996f284149aac01fb1b6f2d
150 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or redirection to malicious content. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a phishing or traffic redirection motive. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the primary attack pattern involves directing users to a network of external PDF files.

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://minoritypodcast.com/uploads/1/3/0/2/130287890/4fe078142242.pdf
    • http://social-promotion.ru/uploads/2020/01/27/a2065622e.pdf
    • http://mindcoachnederland.nl/uploads/1/3/0/5/130542902/8072686.pdf
    • http://siobhanartandecology.com/uploads/1/3/0/6/130639733/a395443061298.pdf
    • http://northsidecigars.com/uploads/1/3/0/5/130541424/jozepukojivuku.pdf
    • http://wd-consult.com/uploads/1/3/0/6/130604311/2543123.pdf
    • http://saytal.ru/uploads/2020/01/29/roborobit.pdf
    • http://relepole.rectaparrew.com/uploads/2020/01/28/kepijuxitoba.pdf
    • https://dupefovidux.weebly.com/uploads/1/3/0/5/130543437/f3bb8b142.pdf
    • http://bayareaboatandhomeloans.com/uploads/1/3/0/2/130272318/759285.pdf
    • http://ccaabasketball.org/uploads/1/3/0/5/130539130/af681e547049.pdf
    • http://clucktruckportland.com/uploads/1/3/0/2/130270779/130270779.html#cereal+box+book+report+template+word

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000126a.bin
7be7ababf55b1cfdd88ba153afa10703b8521f88c6eda475d689b23a95a921a9
pdf-font-stream PDF embedded font (sfnt) at offset 0x126A 7620 bytes