Malicious PDF — malware analysis report

Static analysis result for SHA-256 defc35d47fb5f109…

MALICIOUS

PDF

38.3 KB Created: 2020-03-12 04:44:09 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 9e4c302a00c2a5f1580343087f3619e6 SHA-1: e015fcd17e34e7e3c8862efb6000e0259e9341e0 SHA-256: defc35d47fb5f109dc95194c7321bc2df0be0e8d40224f755b8c160b1682289a
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, characteristic of a link farm or SEO spam tactic, designed to direct users to potentially malicious websites. The ML classifier strongly flagged this PDF as malicious. The embedded URLs suggest a phishing or content-scraping lure, aiming to drive traffic to unrelated domains.

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://blueprinttocash.stefanaarnio.com/uploads/1/3/1/0/131070001/131070001.html#5+difference+between+stakeholders+and+shareholders
    • http://4thandunion.com/uploads/1/3/0/5/130551729/zeneteribi.pdf
    • http://nonewtreesinme.com/uploads/1/3/0/5/130543289/bizimor_zawiteruret_lerotilus.pdf
    • http://portenoylifetimeincome.com/uploads/1/3/0/3/130313339/367a4a57.pdf
    • http://newhomeblinds.com/uploads/1/3/0/7/130776499/359232.pdf
    • http://nthatuwaconstruction.org/uploads/1/3/0/5/130540021/3776805.pdf
    • http://www.fortmillrunningclub.org/uploads/1/3/0/2/130272403/fuketebarisawogobeg.pdf
    • http://www.searchbeaminc.com/uploads/1/3/0/6/130620798/wiparukabiwule.pdf
    • http://fertilewomb.com/uploads/1/3/0/4/130476525/217489.pdf
    • http://inmyday.net/uploads/1/3/0/4/130492441/zoxagozegewowanisono.pdf
    • http://www.michaelbullroberts.ca/uploads/1/3/0/7/130739088/pewekenusobuva.pdf
    • http://www.tombobuffet.designpreviewer.com/uploads/1/3/0/6/130639377/4825866.pdf
    • http://lovingvodka.com/uploads/1/3/0/4/130483578/4372378.pdf
    • http://www.cherrypicked.ca/uploads/1/3/0/6/130620694/730f6e4b6.pdf
    • http://deceptivapparel.com/uploads/1/3/0/4/130490399/muxibizinafigexuzaxi.pdf
    • http://raspberryripplehair.com/uploads/1/3/0/6/130603997/2541124.pdf
    • http://www.seamf.org/uploads/1/3/0/4/130489423/wevetujanibes-laninanu-nowakusupefigom.pdf
    • http://bannockburngreen.com/uploads/1/3/0/6/130621507/6028150.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_off00006deb.bin
de081e3d2cd824a47edfc6f17bf527b3b23249611c243c8c20cdd4db09764b2e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DEB 7640 bytes

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