Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d07f157a8355ce7…

MALICIOUS

PDF

43.9 KB Authoring application: QPDF
MD5: a33daaf76265ae7a7f4c0ed6cf3acd6f SHA-1: 7b6936c7e02d8f0fbb5531360d87f1cb7e200d11 SHA-256: 4d07f157a8355ce74585acedf19c57a0ce2ade72f4362490f589422f1edc6231
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a link farm designed to attract search engine traffic, masquerading as a download for Adobe After Effects CS4. The heuristic 'SE_REMOTE_SUPPORT_LURE' indicates that the document also attempts to trick users into installing remote support tools, which is a high-risk social engineering tactic. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further confirms its malicious nature as a phishing and traffic-generating tool.

Heuristics 4

  • 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
  • Remote-support tool lure high SE_REMOTE_SUPPORT_LURE
    Document instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
  • 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://xefirin.posemosen123.com/uploads/2020/01/28/120ea5b.pdf
    • http://tgi420.ca/uploads/1/3/0/6/130603977/7622821.pdf
    • http://rejointz.com/uploads/1/3/0/3/130313429/e4cb62456af.pdf
    • https://rowolokogugi.weebly.com/uploads/1/3/0/3/130323131/4ab5c26fadb1.pdf
    • http://paintingwithfriendsbw.com/uploads/1/3/0/5/130540661/gegiweseveje_bedaritenujuv.pdf
    • http://skmmglobal.us/uploads/1/3/0/4/130483307/3737607.pdf
    • http://newyorkalternativecare.com/uploads/1/3/0/4/130483678/rakikapupamuzox.pdf
    • http://nationalriskmanagementgroup.com/uploads/1/3/0/4/130476791/130476791.html#adobe+after+effects+cs4+free+download+full+version

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000113e.bin
9ea224ae0dfb6e4a5b88e4fce47b23c20446db30b3619870f4d55c44f2759bf4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x113E 8296 bytes
font_01_sfnt_off00006328.bin
67fc5177fd584259d92df2d04361ee5812aeaf6169251fafb29fd1ddf16900d3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6328 16500 bytes

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