Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ef062d10327077c…

MALICIOUS

PDF

39.2 KB Authoring application: Pdftk
MD5: ad3ed918ada738611f982fa34d640c2c SHA-1: 3289755d4d0ee4a99d1b2f616d9db4779e1a74e0 SHA-256: 5ef062d10327077c0fa6393a3008555a93b425d5b6db16f2ff0163d3f55fb768
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by multiple heuristics, including a critical finding for a large number of external links, suggesting a link farm or SEO poisoning attempt. ClamAV identified it as 'Pdf.Phishing.TtraffRobotInstall-7605656-0', and an ML classifier gave a high confidence score. The embedded URLs likely serve as lures or redirect to malicious content.

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://smoothjazzisrael.com/uploads/1/3/0/6/130621496/tuvuzivadegidewepal.pdf
    • http://studentsenaterwu.com/uploads/1/3/0/6/130604401/3417347.pdf
    • http://mistersac.net/uploads/1/3/0/4/130483494/5314016.pdf
    • http://trinitykalispell.com/uploads/1/3/0/4/130483459/c7be293370ac08.pdf
    • http://olympic-custom-construction.com/uploads/1/3/0/7/130739619/5283835.pdf
    • http://mymissblue.com/uploads/1/3/0/2/130272955/130272955.html#tattoo+release+form+pdf
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000011d3.bin
b14f356f0d9a08f7f758f7f14ea28f6f7623ddf3c9ea6b63e4b07b65f64e548e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11D3 7872 bytes
font_01_sfnt_off00005316.bin
6db2f878e0fd57d3a351d0d81a5ccd7b58f68df6728dadc3aee3ebeb1a1d6e60		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5316 16068 bytes

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