Malicious PDF — malware analysis report

Static analysis result for SHA-256 8229d04e6d59d05f…

MALICIOUS

PDF

39.6 KB Created: 2020-05-30 09:05:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0bf5d8a274546341d3502f87520c6413 SHA-1: a5d87cbe73ecb91f4a937156dcf5a1aa44827e08 SHA-256: 8229d04e6d59d05f54ccc987924a0a26d1081ff9351bd7207488e3d4d13dbe61
96 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a "PDF_SEO_LINK_FARM", indicating the presence of numerous external links. The document body, though heavily obfuscated, contains text related to a "Millennium falcon owner's workshop" and references the authoring application, suggesting a lure. The embedded URLs are likely used to redirect users to malicious sites or download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

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://my.pulsarecharge.com/uploads/1/3/0/2/130270775/130270775.html#millennium+falcon+owner%2527s+workshop
    • http://cct-i.com/uploads/1/3/0/6/130604165/1057189.pdf
    • http://englishspin.com/uploads/1/3/0/2/130289424/ac9a316.pdf
    • http://thyfaulttough.com/uploads/1/3/0/5/130588342/138083.pdf
    • http://weatherproofingguide.com/uploads/1/3/0/7/130740551/94f49272.pdf
    • http://katiethompsonestatevineyard.com/uploads/1/3/0/6/130639197/lirerukivomesatimu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • 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/
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000705a.bin
93d29c30d01a3ea584b78de552acfc68159ccaff467045e7a27318b16c7bc18b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x705A 10204 bytes

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