Malicious PDF — malware analysis report

Static analysis result for SHA-256 47f5b141aaab7618…

MALICIOUS

PDF

36.6 KB Authoring application: ImageMagick
MD5: 810a6738217fa0dc07ae391f2ca301ee SHA-1: d0856c2c4ff63c2c8ead7af6d069e95c6a84332b SHA-256: 47f5b141aaab7618607c3cd7dafbc0823e715acdbea166e5f1baf43a8941f05e
120 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 other PDF files, a technique commonly used in SEO poisoning and phishing campaigns. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a phishing classification. The document body, though heavily obfuscated, contains references to website templates and includes the same URLs found in the heuristics, indicating a lure to download further malicious content.

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://seacareconsult.com/uploads/1/3/0/4/130488345/4780917.pdf
    • http://buddy-burner.com/uploads/1/3/0/6/130621111/6891628.pdf
    • http://irvingunnerving.com/uploads/1/3/0/2/130288830/8a050.pdf
    • http://midnightepiphanymusic.net/uploads/1/3/0/5/130538985/kilurovamesi_gajosiranozim.pdf
    • http://promiseskepthomecare.com/uploads/1/3/0/4/130476208/6501270.pdf
    • http://solvemytechproblem.com/uploads/1/3/0/8/130813780/pasijoxiwatojov-temajidiralu.pdf
    • http://nuobeijing.devsite-1.com/uploads/1/3/0/7/130776034/130776034.html#website+layout+template+html

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000010e6.bin
508cd515548b015f8e886724e164c7f78604211d2e1b82554206dea7befbff9b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10E6 8260 bytes

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