Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ae9ff8821ea0265…

MALICIOUS

PDF

52.8 KB Created: 2020-08-01 04:59:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b51111833f7ce51f3b636a6e48f9b552 SHA-1: c4953c5c209ebbd4009e2fefdd9975051c15e7ec SHA-256: 1ae9ff8821ea0265ee3cca971bc3782497ee0363ee0295c30fa0ac33a38f0abe
150 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with heuristics indicating a link farm and a malicious redirector. The primary malicious URL identified is https://ttraff.ru/pify?keyword=wwe+enterance+music. The document body contains garbled text but also includes the same malicious URL, suggesting a lure related to 'wwe enterance music'. The file was flagged by an ML classifier as malicious.

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=wwe+enterance+music
    • http://files.miyakostudio.com/uploads/1/3/1/4/131407102/ninakujaf.pdf
    • http://files.buckeyevizslarescue.org/uploads/1/3/0/7/130738806/mosizizidepune.pdf
    • http://files.charlenevanbuiten.com/uploads/1/3/1/4/131407057/4b24b.pdf
    • https://cdn.shopify.com/s/files/1/0427/4244/8295/files/google_analytics_tracking_code.pdf
    • https://cdn.shopify.com/s/files/1/0440/8036/5720/files/66208012435.pdf
    • https://cdn.shopify.com/s/files/1/0430/4663/3621/files/45310063807.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/fuwemosuwizukuxitakalav.pdf
    • https://cdn.shopify.com/s/files/1/0432/2007/4663/files/62543559311.pdf
    • https://cdn.shopify.com/s/files/1/0430/6714/6397/files/miwubarorazezaso.pdf
    • https://cdn.shopify.com/s/files/1/0433/6749/7880/files/rukomitije.pdf
    • https://cdn.shopify.com/s/files/1/0435/5234/2184/files/83721515372.pdf
    • https://cdn.shopify.com/s/files/1/0429/9912/0033/files/62314971424.pdf
    • https://cdn.shopify.com/s/files/1/0433/6166/5192/files/faxujizererevegemirid.pdf
    • https://cdn.shopify.com/s/files/1/0434/9722/6402/files/dojod.pdf
    • https://cdn.shopify.com/s/files/1/0427/7341/4055/files/vopofekofare.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_off000083c7.bin
ce5d65bc17c4a6bfb66597522695f1cd5aa578dd1f15aaed2177641549f292c8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x83C7 5020 bytes
font_01_sfnt_off000094d4.bin
cde2dd484d497dc4b62f0cb76d8818124a8b3c17f7c4568808821527b997fa4c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x94D4 15456 bytes

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