Malicious PDF — malware analysis report

Static analysis result for SHA-256 04e4ddd2bb73c1fc…

MALICIOUS

PDF

43.1 KB Authoring application: QPDF
MD5: 2b60127ae4b3543fd79d6f3e0cd646c1 SHA-1: 310ec0c90ed50fd26eee9943392dac88413b6979 SHA-256: 04e4ddd2bb73c1fc1fcb899effbb74addb8dcd6c3283d8c8d07650614ed07423
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to external websites, identified by the PDF_SEO_LINK_FARM heuristic. The document body, though partially obfuscated, mentions 'Cctl container berthing sheet' and includes URLs that appear to be part of a link farm designed to direct users to potentially malicious content. ClamAV also detected this as Pdf.Phishing.TtraffRobotInstall, indicating a phishing or malware distribution intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://laextraordinaire.com/uploads/1/3/0/6/130639209/6539266.pdf
    • http://nflar.club/uploads/1/3/0/7/130738636/jezimowi.pdf
    • http://smsawani.com/uploads/1/3/0/7/130738553/e143c9d.pdf
    • http://mymissblue.com/uploads/1/3/0/4/130476816/130476816.html#cctl+container+berthing+sheet
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00006017.bin
a954f0f4707a7043b63eef75d3c5c66fcd48cda01c81cda12f37a0f4a74e8a31		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x6017 16732 bytes
font_00_sfnt_off00000f99.bin
cd61c02552afe2a19c4ad9f2011cc38fdb684dcb7342f417af1dc3b9a846a580		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF99 8628 bytes

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