Malicious PDF — malware analysis report

Static analysis result for SHA-256 2db5571c49da3dcf…

MALICIOUS

PDF

34.3 KB Created: 2020-04-11 02:40:57 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 7d5dcde7ab0648918769ca071ddae742 SHA-1: 9e1e4dfab9d41f9af47c8745f5b1e78425aa0008 SHA-256: 2db5571c49da3dcf57de45f9417667ff8b0e787a216b4ad1f73cc1e25d26ea7e
62 Risk Score

Malware Insights

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

The PDF file contains a large number of external links to other PDF files hosted on various domains, a technique often used for SEO link farming. The primary heuristic identified a 'PDF_SEO_LINK_FARM' indicating a mass of external PDF links. The document body, though heavily obfuscated, contains URLs that are part of this link farm. This suggests the document's purpose is to redirect users to a network of sites, potentially for malicious advertising, phishing, or malware distribution.

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://allamericandogexpo.com/uploads/1/3/0/7/130776131/130776131.html#zobo+stroller+instruction+manual
    • http://hanlyphotography.com/uploads/1/3/0/5/130539085/tuzemosenilewik.pdf
    • http://theoriginalslimemat.com/uploads/1/3/0/5/130590298/4172d6f80.pdf
    • http://amselections.shop/uploads/1/3/1/4/131437656/513eef5d6f1.pdf
    • http://homesellerhelps.com/uploads/1/3/0/9/130969115/kaligozonero_vagigujovut_febojofu_mafik.pdf
    • http://der-atemraum.com/uploads/1/3/1/3/131384070/nedaruzabibag.pdf
    • http://sjhumangeo.com/uploads/1/3/0/7/130738885/d5887f4.pdf
    • http://silvart.net/uploads/1/3/0/7/130739158/2870634.pdf
    • http://favoritefoods.info/uploads/1/3/0/5/130544687/396a414f38f.pdf
    • http://dustydiamondscleaningservice.com/uploads/1/3/1/4/131453046/poseseru.pdf
    • http://graceholland.net/uploads/1/3/1/4/131453358/mokitapibaxurunapike.pdf
    • http://houstonprobateteam.com/uploads/1/3/0/5/130590322/nusomovutosuvodifo.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_off00005b5d.bin
7ab19fc49c719fa95015ff52195f5b42d426ec52a4b63bb290fd9d37f018f937		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B5D 8352 bytes

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