Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0b6026a034cce4e…

MALICIOUS

PDF

37.4 KB Created: 2020-05-23 07:56:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bc98b0ba1dda3015b813240a98f789b3 SHA-1: 1a03a25f95d7536b3d343dfb32d04c13e54d55d1 SHA-256: c0b6026a034cce4e65cb7d0f1e1efc7a0aa44b9dbfd388b02fb6869047db1f77
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains numerous external links, a common tactic for SEO link farms and potentially malicious redirection. The heuristic PDF_SEO_LINK_FARM firing indicates a high volume of such links, suggesting a coordinated effort to drive traffic. The ML classifier also flagged this PDF as malicious with high confidence. The document body, though partially corrupted, contains text related to an infographic CV template, likely serving as a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9921

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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://huanqiuyule.br3h.com/uploads/1/3/0/5/130551059/130551059.html#infographic+cv+template
    • http://screenwarriorgaming.com/uploads/1/3/0/2/130289587/5540996.pdf
    • http://createdesignrestore.com/uploads/1/3/0/7/130738885/basimoruju.pdf
    • http://scientificutility.com/uploads/1/3/0/6/130604984/pupamowukewox-jevedifereres-liborijufaf-nojegedirupaz.pdf
    • http://chunkybleufarms.com/uploads/1/3/1/4/131410736/gagafup-tagabubanumobo.pdf
    • http://yordanwindowsanddoors.com/uploads/1/3/0/4/130435763/5feff.pdf
    • http://cpcforcrestview.org/uploads/1/3/1/8/131871390/benipijorew.pdf
    • http://rosavegabakery.com/uploads/1/3/1/4/131438233/zaketiz_zefaluk_navudapepi_dazaxavopur.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006716.bin
31122c5b3b4bbb1d9e9451aebdaa4d0bc92bf2fd9ffd75952e2236b887578ba2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6716 10552 bytes

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