Malicious PDF — malware analysis report

Static analysis result for SHA-256 80848b188bd9065d…

MALICIOUS

PDF

41.8 KB Created: 2020-08-06 21:49:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a874e0d3b179f502a3d4706e2fa6f907 SHA-1: 1b3c204200d0efa010b229e790479452f75c64dd SHA-256: 80848b188bd9065d2a901c9693f1e547601ba05d36a5fa1738fc8e70530e8096
150 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.ru'. The document body, though heavily obfuscated, contains this URL and another Shopify URL, suggesting a lure to a malicious site. The presence of numerous external links, many hosted on Shopify, indicates a link farm or SEO poisoning attempt to drive traffic to malicious destinations.

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=bullying+and+harassment+policy+pdf
    • http://jasoful.faceworksnailpolish.com/uploads/1/3/2/6/132695278/nefuke_ruvunelam_muluxota.pdf
    • http://files.zaitoldme.com/uploads/1/3/1/0/131070938/d799ddf32.pdf
    • http://jamel.conncollfilm.com/uploads/1/3/2/7/132740405/9af748f0.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/65925238695.pdf
    • https://cdn.shopify.com/s/files/1/0431/8062/1985/files/tezozusafetixarejinakaju.pdf
    • https://cdn.shopify.com/s/files/1/0439/4103/6200/files/28275898070.pdf
    • https://cdn.shopify.com/s/files/1/0430/1042/4993/files/xujaminilip.pdf
    • https://cdn.shopify.com/s/files/1/0434/4378/1792/files/74000198104.pdf
    • https://cdn.shopify.com/s/files/1/0433/3862/9270/files/holmes_introduction_to_sociolinguistics.pdf
    • https://cdn.shopify.com/s/files/1/0431/7885/2507/files/12558421325.pdf
    • https://cdn.shopify.com/s/files/1/0438/0003/5485/files/85913789388.pdf
    • https://cdn.shopify.com/s/files/1/0433/3184/6296/files/fakemekepesumuxadi.pdf
    • https://cdn.shopify.com/s/files/1/0439/3782/4926/files/astronomy_books_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/7400/2837/files/81169990353.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_off00006725.bin
fb7859c249c6d1ef180480793730789e4f5ab89776bbee915addd6a1f863a4b8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6725 5720 bytes
font_01_sfnt_off00007a7f.bin
d54d97bb57547f06618399ee2cfa254d79ebdb5e2ae5dbd1983d5159c2f8a4f9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A7F 9288 bytes

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