Malicious PDF — malware analysis report

Static analysis result for SHA-256 6dccd8b123402942…

MALICIOUS

PDF

41.7 KB Authoring application: Scribus
MD5: e043b0673abdb697482763116adeda3a SHA-1: 95f9eda1a0d7a9b08cc75965bc178a9254c03ddc SHA-256: 6dccd8b12340294287623a50e22a296c94d4dda604a6902f6a54bf6ea7f3ad29
152 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with numerous URLs pointing to other PDF files. This is indicative of SEO manipulation or a distribution method for further malicious content. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs are the primary indicators of compromise.

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://cementfab.com/uploads/1/3/0/6/130604034/bafevajulibitavute.pdf
    • http://anniescandy.com/uploads/1/3/0/4/130483265/c099e2a74.pdf
    • http://kulturperlen-salling.dk/uploads/1/3/0/6/130603930/sipimum-juvoker-pofiwo-wopifuv.pdf
    • http://doctors-daughters.com/uploads/1/3/0/3/130324037/kifokojivozowi.pdf
    • http://adamhenryink.com/uploads/1/3/0/5/130590043/biwov_kafaxagerugo_jabokamibibelor_mekofuforujirug.pdf
    • http://bewellmindset.net/uploads/1/3/0/7/130776330/waxarojafujonuk.pdf
    • https://tazelojovizazad.weebly.com/uploads/1/3/0/4/130483741/bupilir.pdf
    • http://kreativekidsworld.com/uploads/1/3/0/7/130776159/130776159.html#heart+and+blood+vessels+worksheet+answers
    • 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_off000011a6.bin
c9f5aff21efa11bea865fcea09233c50d71bb8adb8876477576543119761c2bb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11A6 7880 bytes
font_01_sfnt_off00005d0d.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D0D 16036 bytes

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