Malicious PDF — malware analysis report

Static analysis result for SHA-256 610e1710708b51de…

MALICIOUS

PDF

58.1 KB Created: 2020-04-18 15:00:42 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 468b63829ceb51a76724efab109083ad SHA-1: f69e9da6802a272de42597c558bcf86be0d43907 SHA-256: 610e1710708b51de6c2b23b831093444e5ba5e1960104c34eba012361e127066
96 Risk Score

Malware Insights

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

The PDF contains numerous external links, many of which point to other PDFs, suggesting a link farm or SEO manipulation tactic. The document body, though partially corrupted, contains references to 'wkhtmltopdf' and 'homm3 hota templates', indicating a potential lure to a fake content site. No scripts were extracted, but the PDF structure itself facilitates the redirection to malicious URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 4

  • 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
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://whitmancustomdesigns.com/uploads/1/3/0/7/130739712/130739712.html#homm3+hota+templates
    • http://mepsystems.org/uploads/1/3/0/7/130740112/fiwatorezaram.pdf
    • http://legacyfamilyservicesok.org/uploads/1/3/0/7/130776371/gobakofot-gosugawuwuxufib-foviguke-ropozure.pdf
    • http://rearwindowphotography.com/uploads/1/3/1/0/131070302/teluvumasib.pdf
    • http://papassmokehouse.com/uploads/1/3/0/7/130775328/pupumagokukukof_zasel.pdf
    • http://asherlabradors.com/uploads/1/3/0/5/130551294/4519322.pdf
    • http://happyhercollective.com/uploads/1/3/0/4/130476539/b67e4aabf3d48f.pdf
    • http://officeoptimisation.com/uploads/1/3/0/3/130313066/5595127.pdf
    • http://walnutmarket-newton.com/uploads/1/3/1/1/131163864/sevevopigesel_roferavapaje_kafina_xibodokenetesug.pdf
    • http://cybersocialtexas.solutions/uploads/1/3/0/3/130379590/8739391.pdf
    • http://gameaccess.net/uploads/1/3/0/6/130639042/7e8ae0e3597642.pdf
    • http://richardmedina.net/uploads/1/3/1/3/131379803/5086475.pdf
    • http://ecbentovim.com/uploads/1/3/1/3/131384281/bbe32d68e0.pdf
    • http://dottirsports.com/uploads/1/3/0/6/130620300/runuraritudebod.pdf
    • http://manchestersoap.com/uploads/1/3/0/2/130289282/jurirot.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_off0000bd24.bin
38cd4d169c5b78d02c41c5800bc83c8e506cb54e9214bc9861467f7980cc19c8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBD24 8452 bytes

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