Malicious PDF — malware analysis report

Static analysis result for SHA-256 3269a4126f6afab1…

MALICIOUS

PDF

44.1 KB Created: 2020-03-14 12:57:01 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 6b4530040560b5ca924793a693357357 SHA-1: 6c7499031efefca4c1f1b84330ca18956573e58a SHA-256: 3269a4126f6afab1b72784ca5606d8d66e18c6f984e0d899b39c68d2b9b399f8
62 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various domains, suggesting a link farm or a distribution network. The document body, though heavily obfuscated, also contains URLs. The primary attack pattern appears to be directing users to these external sites, potentially for SEO manipulation or to serve further malicious payloads.

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://100kchallenge.stefanaarnio.com/uploads/1/3/0/5/130550915/130550915.html#video+maker+android+tanpa+watermark
    • http://www.eatbreatherun.com/uploads/1/3/0/4/130483343/dinewagik_zeridobakazabub_lukimamugake_luxexodovot.pdf
    • http://ezobord.co/uploads/1/3/0/5/130550986/tikotoder.pdf
    • http://www.derekscott.site/uploads/1/3/0/5/130539046/xegebaf_wisukiwavu.pdf
    • http://laurabakerfashion.com/uploads/1/3/0/7/130775294/3137754.pdf
    • http://kerbfix.com.au/uploads/1/3/0/6/130621634/fagabujo_durufeketuwiv.pdf
    • http://rnnext.net/uploads/1/3/0/6/130639514/66950bb92.pdf
    • http://potcsmatch.com/uploads/1/3/0/5/130551124/d7fb45925.pdf
    • http://ishiro.com/uploads/1/3/0/3/130313557/34edd5a.pdf
    • http://www.exhaleyogabymolly.com/uploads/1/3/0/8/130874278/lubebisutura.pdf
    • http://getyourpetpassport.com/uploads/1/3/0/8/130813722/5243264.pdf
    • http://corneliusbuilding.com/uploads/1/3/0/4/130483804/jomavedodiwat.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007b4e.bin
1b1fc71d22fd792a36ea62ad550de54d9f1132ed225f1baed1a6e0294bdbe26b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B4E 7992 bytes
font_01_sfnt_off00009a63.bin
83459e82cebe561b9e65dda6a09953c9e35f75e5df0fa62a624e1833cc5b8086		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9A63 1708 bytes

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