Malicious PDF — malware analysis report

Static analysis result for SHA-256 e384f6de1c4c26eb…

MALICIOUS

PDF

35.1 KB Created: 2020-03-29 09:49:52 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 3d44d25586c662dad24c9f11f7b2cedb SHA-1: cb1a6dd7e1a61b165ec4a4b351fc4f2f6000acd3 SHA-256: e384f6de1c4c26eb369dd40faabff901f3a036d5411b55f098aa512f7f4bd486
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of external links, a technique often used for SEO poisoning or to direct users to malicious websites. The heuristic 'PDF_SEO_LINK_FARM' specifically flags this behavior. The embedded document body text, though partially corrupted, contains a URL that mirrors the structure of other extracted links, suggesting a coordinated effort to distribute links across multiple domains. No scripts were extracted from this sample, limiting the ability to determine further payload delivery or execution.

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://adsl-63-204-18-43.benefitplans.org/uploads/1/3/0/7/130739162/130739162.html#wings+of+fire+book+13+softcover
    • http://tdpropertyconcepts.com/uploads/1/3/0/7/130739597/5052448.pdf
    • http://musilmusic.net/uploads/1/3/0/4/130436017/8151313.pdf
    • http://peruknowledge.com/uploads/1/3/0/3/130323212/setesibatuka.pdf
    • http://rcposs.com/uploads/1/3/0/5/130590458/renez.pdf
    • http://hookmo.com/uploads/1/3/0/9/130969373/4247145.pdf
    • http://interstatefive.net/uploads/1/3/0/7/130776677/4090239.pdf
    • http://notasportsbar.ca/uploads/1/3/0/6/130604448/tabajodurowepurobowa.pdf
    • http://www.phonadic.org/uploads/1/3/0/6/130639701/bafujoz.pdf
    • http://lewerygardeningservices.com/uploads/1/3/0/6/130639465/23cc46ee7d277.pdf
    • http://www.save365.com/uploads/1/3/0/3/130379549/konanemudo_lirunim_pusubavaremom.pdf
    • http://myssample.com/uploads/1/3/0/7/130775518/takuvo.pdf
    • http://pushinink505.com/uploads/1/3/0/2/130272414/eb75e82c375c2.pdf
    • http://mta-sts.mail.mmpoolconstruction.com/uploads/1/3/0/3/130323208/5604844.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_off000062f3.bin
cada5f4c71f003e5374a68f1758095db853cc8af9102512c002eee28b8015439		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62F3 7388 bytes

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