Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3fd88112ac89b4e…

MALICIOUS

PDF

37.9 KB Created: 2020-04-09 13:58:23 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 3e9e944451efc590f40eb853147c091e SHA-1: b45c80b005d17de87b521eea174d8ebe12b99d94 SHA-256: c3fd88112ac89b4e58c86934d5e754457bd80687c2009212eb9f1f271efbb577
62 Risk Score

Malware Insights

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

This PDF document exhibits characteristics of a link farm, with a large number of external URLs embedded within it. The primary heuristic firing indicates a 'PDF_SEO_LINK_FARM', suggesting the document's purpose is to artificially inflate search engine rankings or direct users to a network of potentially malicious sites. The embedded URLs, such as http://extravirgincoffee.com/uploads/1/3/0/2/130273812/130273812.html#que+significa+acotaci%C3%B3n+teatral, are likely part of this scheme.

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://extravirgincoffee.com/uploads/1/3/0/2/130273812/130273812.html#que+significa+acotaci%C3%B3n+teatral
    • http://ohwhatthekale.com/uploads/1/3/0/7/130775378/bojorelorefezigepov.pdf
    • http://churchmultiplicationministries.org/uploads/1/3/0/8/130873978/wotawulowud-mijimixifiwugi-rukizubepabal.pdf
    • http://tjbrantley.com/uploads/1/3/0/3/130313786/bifenima_tigine_linodakavo_bediwuzu.pdf
    • http://horseridinglessonsdelmarpemftherapyforhorsesdogshumans.com/uploads/1/3/1/3/131398054/96d9f495.pdf
    • http://southerncrossdigital.com/uploads/1/3/0/3/130313657/98b20.pdf
    • http://triplethreeartsandmedia.com/uploads/1/3/0/8/130874674/dafiram.pdf
    • http://tlwilliams3rdgradeclass.com/uploads/1/3/0/4/130476830/ruzugewulopexewevese.pdf
    • http://pasadenaapplianceservice.com/uploads/1/3/0/7/130739761/1305568.pdf
    • http://globalkhansulting.com/uploads/1/3/0/5/130588976/wixemo-xiduto-xovivawibe-gorekowisaxala.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_off00006a54.bin
496c14531f723648388557e76a68f1df47d38bf13e4d36d5fb010baf6aabb6dc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A54 8464 bytes

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