Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f7042e1d2ed3298…

MALICIOUS

PDF

34.3 KB Created: 2020-08-20 07:48:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: be1ea18fb9b2c2ef847b7dc38c12efe1 SHA-1: 22d8a491185805a206a1121643a0cf4ce7da009a SHA-256: 2f7042e1d2ed3298381cf5309c08a5f4c72a7eca9b533541cf8f92dcb789d7f9
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains numerous embedded links, with a critical heuristic identifying a malicious redirector at 'https://ttraff.ru/pify?keyword=agent+vinod+movie++in+hd'. The document body, though heavily obfuscated, contains this URL and appears to be a lure for a movie download. The presence of a large number of external PDF links, many hosted on Shopify, suggests a link farm used for SEO poisoning or distributing malicious content. 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.ru/pify?keyword=agent+vinod+movie++in+hd
    • http://rasefaxat.irokoandfeather.com/uploads/1/3/2/6/132695278/802175.pdf
    • http://govos.grounded-infrastructure.com/uploads/1/3/1/6/131637814/gavetezigeripo.pdf
    • http://dilivuko.petshop.studio/uploads/1/3/1/0/131071157/tavila_zenafikimexu_vafomasiv.pdf
    • https://cdn.shopify.com/s/files/1/0428/4815/7859/files/bivokoguxedoxafarugaxojo.pdf
    • https://cdn.shopify.com/s/files/1/0432/0195/3952/files/46485488219.pdf
    • https://cdn.shopify.com/s/files/1/0432/3511/5176/files/fesamed.pdf
    • https://cdn.shopify.com/s/files/1/0435/4198/7479/files/6592690567.pdf
    • https://cdn.shopify.com/s/files/1/0433/7054/5308/files/goromezonidudaduma.pdf
    • https://cdn.shopify.com/s/files/1/0437/7162/5621/files/relonadone.pdf
    • https://cdn.shopify.com/s/files/1/0464/9435/1512/files/sasar.pdf
    • https://cdn.shopify.com/s/files/1/0436/7548/4313/files/43004401800.pdf
    • https://cdn.shopify.com/s/files/1/0433/8706/0378/files/77758305747.pdf
    • https://cdn.shopify.com/s/files/1/0436/9838/9145/files/national_interest_definition.pdf
    • https://cdn.shopify.com/s/files/1/0439/2363/6379/files/modelo_canvas_que_es.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_off000049cf.bin
c21ab4431b6c59091e6e123b4a585c139981b214915ea84849b4f9e9bd31dde2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x49CF 4772 bytes
font_01_sfnt_off000059ef.bin
31a9a7a5911a4fb7a7e1fae9846c57ae6928f5b440c34e7769290867f83a99a3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59EF 10248 bytes

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