Malicious PDF — malware analysis report

Static analysis result for SHA-256 293b4f6169e75610…

MALICIOUS

PDF

39.1 KB Authoring application: Adobe PDF Library 9.0
MD5: 9723915e77df3ce85c132a91eb8f5e8c SHA-1: 6f9bc9741a05a85efcb87f1fd9c0521c0fd5df2c SHA-256: 293b4f6169e75610f0efe142d5fef601c4f35302e2177b1be4124502a648f438
150 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various domains. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier output strongly indicate malicious intent. The document body, despite being partially corrupted, mentions 'Liberica coffee seedlings' and includes URLs, suggesting a lure to phishing or malware download sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://dibot.espressoplanner.com/uploads/2020/01/28/0ee755e4fddf.pdf
    • http://ta-global.site/uploads/2020/01/28/4062048.pdf
    • http://likomod.zdes.tech/uploads/2020/01/28/c45633434637d4.pdf
    • http://rustykettle.com/uploads/1/3/0/4/130476503/6407971b539c2bd.pdf
    • http://policetrailer.com/uploads/1/3/0/5/130551621/130551621.html#liberica+coffee+seedlings

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00000fd9.bin
2debb58acb4ed1aa251b2004c8265dbe82e5bae2dd27fad968275a8c0fa53492		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFD9 8244 bytes

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