Malicious PDF — malware analysis report

Static analysis result for SHA-256 ef3988ad47af8769…

MALICIOUS

PDF

36.6 KB Created: 2020-04-11 12:13:16 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 6bcac76f96943072bc45ed1f32f8e607 SHA-1: 31da6f9fbba64a37a3ec6ba8cc9b3d2677244bcf SHA-256: ef3988ad47af87698e6859f7912e7ca7d4b50fe99f88a7192a106f1c7f46b8bf
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF file contains a large number of external links, many of which point to other PDF files hosted on various domains. One such link, http://sanantoniopetgrooming.com/uploads/1/3/0/9/130969000/130969000.html#ftce+pe+k-12+study+guide, is presented as a study guide, indicating a lure to entice users to click. The heuristic PDF_SEO_LINK_FARM suggests this is a link farm designed to manipulate search engine results or distribute malware. No scripts were extracted from this sample.

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://sanantoniopetgrooming.com/uploads/1/3/0/9/130969000/130969000.html#ftce+pe+k-12+study+guide
    • http://waterfordcoach.org/uploads/1/3/1/4/131437312/2656cc3529.pdf
    • http://discoverykingdomwv.com/uploads/1/3/0/7/130739233/rajipilogelefipelo.pdf
    • http://uptowngalleryoffranklin.com/uploads/1/3/1/1/131164114/jodulanitadivu.pdf
    • http://foyntonsberg.no/uploads/1/3/0/6/130604767/3437817.pdf
    • http://freeamericantravel.com/uploads/1/3/1/4/131407655/98025bc22a0.pdf
    • http://primarypropertyinspections.com/uploads/1/3/0/3/130379357/14ff085ab50d0e5.pdf
    • http://communitysupportedwomanhood.com/uploads/1/3/0/2/130270873/5763024.pdf
    • http://minecraftserverlists.net/uploads/1/3/1/4/131454754/24d38393e6b34.pdf
    • http://orangecountycarpetservices.com/uploads/1/3/0/4/130483986/fevosofepare.pdf
    • http://nextgenaccounting.ca/uploads/1/3/0/5/130551641/5de35da5b.pdf
    • http://tourdelaw.com/uploads/1/3/1/4/131438143/2a77b3.pdf
    • http://bullyfreeyork.com/uploads/1/3/0/3/130379353/ba5b488.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_off000067e7.bin
45ac2371178c72d9b17f1a4c3b6edd168c30353199588b18b89652d2ea1277a9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67E7 7856 bytes

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