Malicious PDF — malware analysis report

Static analysis result for SHA-256 8402cd53fbd4b9a3…

MALICIOUS

PDF

29.8 KB Created: 2020-04-04 14:05:13 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 58127d409c27b3518a04c59d831d58ec SHA-1: 8e5c350637c5818e3caf199a86c24da9d32583c2 SHA-256: 8402cd53fbd4b9a3f9a4723c3b486876ab4dcb2b52718353003ffdbca86292a8
62 Risk Score

Malware Insights

MITRE ATT&CK
T1598 Gathering Victim Identity Information T1204 Malicious Link

The PDF document contains a significant number of external links to other PDF files hosted on various domains, indicative of a link farm or content distribution network. The heuristic 'PDF_SEO_LINK_FARM' specifically flags this behavior, suggesting an attempt to manipulate search engine results or distribute content across multiple sites. The embedded URL in the document body, 'http://vertacc.ca/uploads/1/3/0/6/130639946/130639946.html#como+programar+un+control+rca+a+una+tv+lg', is one of many such links, pointing towards a coordinated effort to redirect users. No scripts were extracted from this sample.

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://vertacc.ca/uploads/1/3/0/6/130639946/130639946.html#como+programar+un+control+rca+a+una+tv+lg
    • http://opusbytes.com/uploads/1/3/1/1/131164131/9695949.pdf
    • http://www.vanesanieri.com/uploads/1/3/1/0/131070230/xapalopaxakalud_wokuzanavemewa.pdf
    • http://quadhealthgroup.com/uploads/1/3/0/5/130588902/4cc71c81.pdf
    • http://washitallcastillery.com/uploads/1/3/0/6/130640097/lasipipajizafej.pdf
    • http://triplexcare.com/uploads/1/3/0/5/130550920/sapeluruxi.pdf
    • http://knowledgeisempowering.org/uploads/1/3/1/1/131163690/4167374.pdf
    • http://ghgwba.com/uploads/1/3/0/8/130814011/3239388.pdf
    • http://ibookkeep.com/uploads/1/3/0/4/130435635/gozazijo_guwisuzosapel_mulutopewi_sufajobabepures.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_off00004f18.bin
7f7392a6d8b11df35202fef7d9250fe657fb46ab699f606d0ead3f6309d61ffe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4F18 7264 bytes

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