Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ee414139ff20d2e…

MALICIOUS

PDF

39.7 KB Created: 2020-03-30 02:23:28 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: ae7b38b13fb0807b604ae34b37a2f3c1 SHA-1: 4aa38797c5c16727d0c1992dbd01a13e04d99147 SHA-256: 3ee414139ff20d2e643456857fe9cb4c18464f4fac0082c4bb01859418dba65e
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of external links, a technique often used for SEO poisoning or to redirect users to malicious sites. The document body, though heavily obfuscated, contains text related to installing drivers and several URLs that appear to be part of a link farm. The ML classifier strongly indicated maliciousness. The primary attack pattern involves luring users through deceptive content and a high volume of links.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://ankezimmermann.ca/uploads/1/3/0/4/130435638/130435638.html#how+to+install+compat+wireless+drivers+in+kali+linux
    • http://nadzorybudowlane-arles.pl/uploads/1/3/0/3/130323755/863897.pdf
    • http://carllittlelaw.com/uploads/1/3/0/6/130639768/vutaronolesa_saforurodebaf.pdf
    • http://overdrive-session-guitar.com/uploads/1/3/1/4/131438150/towinewixugabo_fiwijo_modogijekupuzak.pdf
    • http://testmockpractice.com/uploads/1/3/0/8/130814112/govosotodumiv.pdf
    • http://hairstoneducation.org/uploads/1/3/0/3/130379243/628969.pdf
    • http://tmariesells.com/uploads/1/3/0/5/130539783/dizulowuzitig.pdf
    • http://manuelramires.com/uploads/1/3/0/3/130313170/3236231.pdf
    • http://freemt4indicators.net/uploads/1/3/0/5/130541208/804003.pdf
    • http://autodiscover.the-french-house.net/uploads/1/3/0/6/130604928/kafulaz.pdf
    • http://latitudesproperty.com/uploads/1/3/0/6/130605203/bb443040a.pdf
    • http://avantashairrestorationclinic.com/uploads/1/3/0/6/130620912/puzamagawanegod.pdf
    • http://femworld.eu/uploads/1/3/0/6/130621405/vanana.pdf
    • http://shoproyaltywear.com/uploads/1/3/0/6/130639357/680440.pdf
    • http://lindapilat.com/uploads/1/3/0/5/130590395/fenut.pdf
    • http://www.buildupallestimenti.com/uploads/1/3/0/6/130621853/muxinixenam.pdf
    • http://creatingchangeforafrica.com/uploads/1/3/0/6/130604014/daboz-basomibefu-difadera-gesej.pdf
    • http://sbr-lydproduktion.dk/uploads/1/3/0/3/130323415/2466fe4b2e7d2.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_off00006e6b.bin
9c3c5d94e726724779bd1d0d148580a332c4ba58f95119015838021c46ae0c04		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E6B 8532 bytes

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