Malicious PDF — malware analysis report

Static analysis result for SHA-256 0dc53ec0b474441b…

MALICIOUS

PDF

40.6 KB Authoring application: LibreOffice
MD5: 59086077db6e712dcab8e2da50f9bbd9 SHA-1: 30414159c4ecbe659aabb9aa49534a2b978e8990 SHA-256: 0dc53ec0b474441b2525f79c16259b829dad8f4f7bcdff4a3d1fa99891121aa1
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF was flagged by multiple heuristics, including ClamAV and an ML classifier, as malicious. It contains a large number of embedded URLs pointing to external PDF files, a technique often used for SEO spam or to distribute further malicious content. The document body contains garbled text and a title related to a children's movie, likely a lure.

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://koresut.bankrotstvo.net/uploads/2020/01/28/timozelapa_muvusuz_jazaj.pdf
    • http://tp4seniors.ca/uploads/1/3/0/5/130542982/6604187.pdf
    • http://bcdcosmetics.com/uploads/1/3/0/6/130604394/bosisevox.pdf
    • http://camporiondo.com/uploads/1/3/0/7/130739764/belukodidutezugabal.pdf
    • http://corsettiparalegal.com/uploads/1/3/0/2/130273762/80d097d97fdfb7.pdf
    • http://bifitoxibo.mall-mark.com/uploads/2020/01/28/9552274.pdf
    • http://ravenheim.net/uploads/1/3/0/7/130740265/52596.pdf
    • http://mindfulmerchandise.org/uploads/1/3/0/6/130622051/2184674.pdf
    • http://cfthomas.com/uploads/1/3/0/7/130775539/130775539.html#the+amazing+panda+adventure+movie
    • 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_off000011f7.bin
ccbd744618e00baf7ae1d0d8f9c5d3ed841fa100291ab725c49d82b0c0ca87db		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11F7 9132 bytes
font_01_sfnt_off0000566f.bin
2dd5cf97b8e071cfaea81668eb32a85ae8aaec09d9a2aa01a0a7a71fb7c40e7a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x566F 16604 bytes

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