Malicious PDF — malware analysis report

Static analysis result for SHA-256 dda9cb797bc1e74a…

MALICIOUS

PDF

42.0 KB Authoring application: ImageMagick
MD5: 00a71c51500e6cd32e41aa0b9ebdb58b SHA-1: 9b186c95399ee2bd1cd17f17dc00306a49f4243a SHA-256: dda9cb797bc1e74a88400134bf50fdba9140df9d1480525079be171b6f53f5c7
150 Risk Score

Malware Insights

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

The PDF was flagged by multiple heuristics, including a critical rule for a link farm and a machine learning classifier indicating maliciousness. ClamAV also identified it as 'Pdf.Phishing.TtraffRobotInstall-7605656-0'. The document body contains numerous embedded URLs, suggesting a phishing or redirection attempt. The primary attack pattern involves leveraging these links to potentially lead users to malicious sites or download further malware.

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://fountainalleybodycare.com/uploads/1/3/0/2/130288802/2332002.pdf
    • http://portalcoabana.com/uploads/1/3/0/4/130494801/61dd5be1b697295.pdf
    • http://dar.kiamotors.md/uploads/2020/01/28/1365871.pdf
    • http://youthening.org/uploads/1/3/0/5/130589006/kudufenasamerapor.pdf
    • http://tegiferi.ourverify.com/uploads/2020/01/27/3776547.pdf
    • http://cofhhe.org/uploads/1/3/0/6/130604129/1354248.pdf
    • http://2501fulton.com/uploads/1/3/0/6/130639746/ketufupixevume-labuj-jafapi-wawaxapipozumo.pdf
    • http://zambiasafarihunting.com/uploads/1/3/0/6/130621201/130621201.html#guess+who+sheet+music

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000113c.bin
8817cd5f155e2d18b87ca88908a71e9ef0b4558bfe4dd78ef75c8393c0aba3a7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x113C 8928 bytes

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