Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8a126e7be007a2e…

MALICIOUS

PDF

32.9 KB Authoring application: Mobipocket Creator
MD5: 743a5a753851e3e0273d5e38d0c0730a SHA-1: 7a521b29155fd5196461a2b9bf445b34b15168b8 SHA-256: e8a126e7be007a2e0827bbc647b687afba5efdbe84ab72278ebd133b6e606b45
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded URLs, forming a link farm designed to direct users to external PDF files. The document body text, though corrupted, suggests a lure related to downloading songs, which is a common tactic for phishing or malware distribution. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall' further supports the malicious intent.

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://beri-bolshe.com/uploads/2020/01/29/jerebemu.pdf
    • http://weddingproct.com/uploads/1/3/0/6/130604757/cc4f6.pdf
    • http://the-revolution-of-hope.com/uploads/1/3/0/6/130640225/e4c43a000c48a.pdf
    • http://dsreco.com/uploads/1/3/0/3/130323493/68266637063.pdf
    • http://aaagospelminister.com/uploads/1/3/0/3/130313741/vomulute.pdf
    • http://samogon-74.ru/uploads/2020/01/29/2768677.pdf
    • http://manac-russia.com/uploads/2020/01/28/6359994.pdf
    • http://cfthomas.com/uploads/1/3/0/5/130551464/130551464.html#banjara+movie+song++pagalworld
    • http://cfthomas.com/uploads/1/3/0/5/130551464/130551464

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000010b1.bin
2211ea7e136281157f2cef5e303a44b6fdbd3c7045dd3fa121717569655a8933		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10B1 7764 bytes

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