Malicious PDF — malware analysis report

Static analysis result for SHA-256 c09a9784104c3ebe…

MALICIOUS

PDF

39.9 KB Created: 2020-08-08 15:23:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 96c0ad72e9fe54e06d7b3c53734913d7 SHA-1: 038fb3f4679b08e1c4af4a3c264a7bf9eca5828c SHA-256: c09a9784104c3ebec7ed05398296bfe809734590fa7327c982d8e8c410aba26e
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Phishing: Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, many of which point to a redirector service. The primary malicious URL identified is https://ttraff.cc/pify?keyword=etika+utilitarianisme+dalam+bisnis+pdf, which is flagged as a malicious redirector. The PDF also exhibits characteristics of a link farm, with numerous links to external resources, some of which are hosted on Shopify. The ML classifier strongly indicates maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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 https://ttraff.cc/pify?keyword=etika+utilitarianisme+dalam+bisnis+pdf
    • http://files.singerbec.com/uploads/1/3/1/4/131409017/zunezugupamadidugexu.pdf
    • http://lasozidi.kyharvest.com/uploads/1/3/2/7/132740214/8917458.pdf
    • http://files.londontoursatnight.co.uk/uploads/1/3/0/8/130813645/7311200.pdf
    • https://cdn.shopify
    • https://cdn.shopify.com/s/files/1/0439/8543/6830/files/botulism_in_animals.pdf
    • https://cdn.shopify.com/s/files/1/0429/9623/6447/files/gipemeredogozepav.pdf
    • https://cdn.shopify.com/s/files/1/0430/1075/2663/files/kizasuli.pdf
    • https://cdn.shopify.com/s/files/1/0439/3651/4216/files/diguwitin.pdf
    • https://cdn.shopify.com/s/files/1/0430/4610/9341/files/64301313365.pdf
    • https://cdn.shopify.com/s/files/1/0428/3059/4204/files/tedonokerifo.pdf
    • https://cdn.shopify.com/s/files/1/0428/5153/2963/files/49494754461.pdf
    • https://cdn.shopify.com/s/files/1/0429/9200/9365/files/67606779521.pdf
    • https://cdn.shopify.com/s/files/1/0433/7542/7735/files/zamemurojupixotun.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/30899714004.pdf
    • https://cdn.shopify.com/s/files/1/0434/6236/1245/files/c_queue_class.pdf
    • https://cdn.shopify.com/s/files/1/0435/5738/8437/files/57344051484.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zugazad.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005f68.bin
f244dd122b83d1a2d4a6738cb44120c72cfda5250e309df0750255c58b716431		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F68 5348 bytes
font_01_sfnt_off0000717f.bin
c2d0c83f0489be1ebef71c1cb31d55664b8ca4ae7ec975607d20490556659a71		 pdf-font-stream PDF embedded font (sfnt) at offset 0x717F 9632 bytes

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