Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e8c434b994876a3…

MALICIOUS

PDF

28.1 KB Created: 2020-04-09 16:56:26 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 6d8bc600296f2d7d2f2f8706e032bf4b SHA-1: 451beee06c159aed5075525e78c90138865d06b9 SHA-256: 8e8c434b994876a3150e2654712616faba0559776c650bcf7222ee05b69a490f
62 Risk Score

Malware Insights

MITRE ATT&CK
T1598 Gather Victim Identity Information T1204 Malicious Link

The PDF file contains a large number of external links, many of which point to other PDF files on different domains. This behavior is indicative of a link farm or a mechanism to distribute malicious content across multiple sites. The presence of the 'PDF_SEO_LINK_FARM' heuristic firing strongly supports this assessment. The document body contains text related to 'Sullair 185 parts manual' and 'wkhtmltopdf', suggesting a potential lure for users searching for technical documentation.

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://alliwantconference.net/uploads/1/3/0/6/130604646/130604646.html#sullair+185+parts+manual
    • http://juniorgoldenpencilawards.com/uploads/1/3/0/2/130289045/60457828.pdf
    • http://sedanthegodofsound.com/uploads/1/3/0/4/130489696/bonuwixafajux-firewodunadazo.pdf
    • http://cobberdogbreedersaustralia.org/uploads/1/3/1/3/131384208/naseburedolubewa.pdf
    • http://ainpain.com/uploads/1/3/0/7/130775163/7746896.pdf
    • http://testmyowl.com/uploads/1/3/1/4/131483061/noxopozireli.pdf
    • http://worlds507.otherworlds-edu.com/uploads/1/3/0/8/130813852/33704.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_off000048f3.bin
6053cfaec48162d9679a35b627d6f39e1b3929e8f8fad78954151b88b826ea0d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x48F3 6896 bytes

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