Malicious PDF — malware analysis report

Static analysis result for SHA-256 dcbb3967403d4561…

MALICIOUS

PDF

37.8 KB Created: 2020-04-24 09:28:56 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 3ea943d8fea38731efc9105f1c45fa21 SHA-1: 9816eb67fa727a226642400dea91cb45d0ecf75b SHA-256: dcbb3967403d4561dc4fb66ffecba9fd7154dc1aa4546a72fb495daf481d56bd
62 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which point to other PDFs hosted on unrelated domains. This behavior is indicative of a link farm or SEO manipulation tactic, often used to distribute malicious content or improve the ranking of attacker-controlled sites. The primary heuristic identified a mass external PDF link farm, suggesting the document's purpose is to redirect users to these external resources.

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://rcmobilecarwash.com/uploads/1/3/0/9/130969673/130969673.html#individual+and+societal+multilingualism+pdf
    • http://irisfitzgerald.com/uploads/1/3/0/8/130814346/1204683.pdf
    • http://nicolekroutil.com/uploads/1/3/0/2/130289467/fadokibimajepa-bibavamid-wurimobazetaxu-mutetitow.pdf
    • http://docilebodiess.com/uploads/1/3/0/7/130740461/665bd1375028.pdf
    • http://calmingconnectionsmassage.com/uploads/1/3/0/6/130620327/12923908.pdf
    • http://jeannesternerphotography.com/uploads/1/3/0/7/130738497/wuvijavirubunuj-laxanepawevar.pdf
    • http://incurableanduntreatable.com/uploads/1/3/0/5/130539092/8630970.pdf
    • http://thompsoncitypainting.com/uploads/1/3/0/2/130289224/53e4f.pdf
    • http://contentconsulting.org/uploads/1/3/1/3/131398350/xivonugaxukefot.pdf
    • http://incurableanduntreata
    • 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_off00006be1.bin
638d481b8a8b454a228e10da5e91e67de7047be19c2c1511c9c12dec943072c2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BE1 8172 bytes

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