Malicious PDF — malware analysis report

Static analysis result for SHA-256 a63e5e9436b7f99a…

MALICIOUS

PDF

37.5 KB Created: 2020-05-02 16:17:51 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 4952590cbd90dfdc7bd59c561c6d5681 SHA-1: 29479b62465bbe097a32520dfd380c6d454cb364 SHA-256: a63e5e9436b7f99a8b364c3f466ea58bc4d2e1dd0ce2a39ebb97fc7204e04c41
62 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which are hosted on newly created domains and appear to be part of a link farm designed to attract traffic. The document body, though corrupted, contains text suggesting it is a lure for 'Tamil news meme templates', which is likely a pretext to drive users to these malicious URLs. The heuristic 'PDF_SEO_LINK_FARM' strongly indicates a malicious intent to redirect users to potentially harmful content.

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://cambraicollection.com/uploads/1/3/0/9/130969004/130969004.html#tamil+news+meme+templates
    • http://lochvaalvillage.com/uploads/1/3/1/3/131379622/fodapuvip.pdf
    • http://opendoorbibleministry.org/uploads/1/3/0/7/130775893/9755464.pdf
    • http://techknowledgeu.com/uploads/1/3/1/4/131483147/kurekunaroxuriti.pdf
    • http://capital1finance.com/uploads/1/3/1/3/131398447/aa2459f89bf624.pdf
    • http://dailytechopinions.com/uploads/1/3/1/4/131482963/d941bdc0.pdf
    • http://jnewirecreations.com/uploads/1/3/1/4/131437085/a3bf98.pdf
    • http://hornblowertours.com/uploads/1/3/0/7/130738951/8040f2f404.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000051fe.bin
063aab031bf182316d3d81ea5c68d770c2dbb763db6c90fa544f44fb1d07c0f0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x51FE 9560 bytes
font_01_sfnt_off00006b5f.bin
e7553c1fc206a9e07e96e05f51646b32749546b7668634f16c687bde6fbb5cd8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B5F 7592 bytes

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