Malicious PDF — malware analysis report

Static analysis result for SHA-256 90691ce0b69367df…

MALICIOUS

PDF

41.6 KB Created: 2020-04-28 18:32:44 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 8441745db4a3f5025cbe662bba4c19bc SHA-1: 802aa1d4fb6800e8313a014e3b4dd16567fc993b SHA-256: 90691ce0b69367dfb23549c93d8e1b366d812e0eed662b606ea5588dbfb72220
62 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of a link farm, with numerous embedded URLs pointing to external domains. The heuristic 'PDF_SEO_LINK_FARM' indicates a high volume of these links, suggesting an attempt to manipulate search engine results or distribute malicious content. The primary URLs identified are likely part of this distribution scheme.

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://directroofrestoration.com/uploads/1/3/0/7/130776298/130776298.html#aankh+marey++bestwap
    • http://tacotime.org/uploads/1/3/0/6/130640003/d55c53733edab.pdf
    • http://grayandcoprints.com/uploads/1/3/0/2/130287239/4890331.pdf
    • http://highandoutsideadventures.com/uploads/1/3/0/6/130621501/nitutot.pdf
    • http://pencilpenservices.com/uploads/1/3/0/7/130776068/gosawel-paduf-zizap-ladudezibot.pdf
    • http://luvkisseslingerie.com/uploads/1/3/1/3/131383619/01ba8ddac24731.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_off00004f51.bin
f03c507ba8ee2c69034bd109eab541714946270d394f4ff107766d656f5996cf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4F51 15752 bytes
font_01_sfnt_off00007aba.bin
e346339483b6387843d06ebf61765c5c50c12dd1cc7f491ccd776e7b492d0c63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7ABA 8580 bytes

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