Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d9baa3270ebfb4b…

MALICIOUS

PDF

34.5 KB Created: 2020-04-05 10:14:13 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 7092a6fb453566e55cc8b7a9582f763f SHA-1: 2fb6df23f0806b0c887ed06be7046acb1d8d7d24 SHA-256: 3d9baa3270ebfb4baf3ed33ba59c73b4c7592837b6c3ef16a2f4210ab23b453f
62 Risk Score

Malware Insights

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

The PDF document contains a large number of external links to various domains, a technique often used for SEO manipulation or to distribute further malicious content. The heuristic 'PDF_SEO_LINK_FARM' specifically flags this behavior, indicating a network of linked PDFs. The embedded document body text, while containing technical terms, also includes URLs that are part of this link farm, reinforcing the attack pattern.

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://adoptme.info/uploads/1/3/1/4/131455247/131455247.html#motores+electricos+trifasicos+asincronos
    • http://atlautodetailing.com/uploads/1/3/0/2/130291579/fekibelidefazo.pdf
    • http://innovasoftware.org/uploads/1/3/0/5/130539672/6108637.pdf
    • http://eruchadams.com/uploads/1/3/0/4/130436298/bf42e28edf.pdf
    • http://villagearch.com/uploads/1/3/0/2/130289610/4653bac7.pdf
    • http://voterichardnewton.com/uploads/1/3/1/3/131380344/58766.pdf
    • http://easymortgagedeals.com/uploads/1/3/0/6/130620389/8769061.pdf
    • http://avoiceforchildren.org/uploads/1/3/0/4/130483923/tutodiza-sodesive-nosixojat-xemarep.pdf
    • http://jskmarket.com/uploads/1/3/0/5/130542859/4363223.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_off00005ec1.bin
92da559b6b80a5aa3eea8e6a8bcc2a6833c2f6d35d24f475c6ed9ef80ba12f78		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5EC1 7888 bytes

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