Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6500f406f46729b…

MALICIOUS

PDF

34.7 KB Created: 2020-04-26 19:59:56 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 9a93eba1dd862cc6314da0bb764da1a2 SHA-1: 63d9a5e7b0543e8e6f6defc23bfe98b243819726 SHA-256: b6500f406f46729b1acc33ca4cb846a90f7fb05ef1b5f0d2a9f338371947f11b
92 Risk Score

Malware Insights

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

The PDF contains a large number of external links to various domains, indicating a link farm or redirection scheme. The ML classifier strongly flagged this PDF as malicious. The document body contains garbled text and URLs, suggesting it is not intended for direct user consumption but rather to facilitate the link farm. No scripts were extracted, limiting the analysis of direct payload delivery.

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://hkcfoundationforparkinsons.org/uploads/1/3/0/3/130323538/130323538.html#platform+movie+full+cast
    • http://turtledancemusic.org/uploads/1/3/1/3/131381693/b516aaabbf.pdf
    • http://deadweightmovie.com/uploads/1/3/1/4/131453967/semoret-filigunokopafox.pdf
    • http://patriotkatzmainecoon.com/uploads/1/3/0/5/130550683/b924d.pdf
    • http://dantzlertaxesandmore.com/uploads/1/3/0/6/130620813/0768f62f09ea.pdf
    • http://ooredookuwait.net/uploads/1/3/0/5/130550869/xoluvajizite_sozexaw.pdf
    • http://boxroomevents.com/uploads/1/3/0/7/130740033/vepetowulafejibepa.pdf
    • http://inflatableboatsnow.com/uploads/1/3/0/4/130488850/zubebo.pdf
    • http://novalights.net/uploads/1/3/1/3/131398350/9655701.pdf
    • http://chelseaeaton.com/uploads/1/3/0/6/130639965/c90accba.pdf
    • http://fit-nav.com/uploads/1/3/1/3/131384613/91a808d3ad9.pdf
    • http://duitoneintegrity.com/uploads/1/3/0/5/130551880/e32a88069d1.pdf
    • http://hanselandgretelcottage.com/uploads/1/3/0/2/130270833/d40211de769.pdf
    • http://consciouslyme.online/uploads/1/3/0/3/130324075/2073700.pdf
    • http://turningtomicrons.com/uploads/1/3/0/4/130483961/6061390.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_off00005e35.bin
3f4dbc24b74360e87b585895748f700fef4128e0faf11189e92010146adb2771		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E35 8052 bytes

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