Malicious PDF — malware analysis report

Static analysis result for SHA-256 cfaf3733a0449767…

MALICIOUS

PDF

59.3 KB Created: 2020-08-18 16:32:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4e4b22d8f3c7066815d3a82eda90962f SHA-1: daff10b50c1e01b4047e958e48046399c1bf26ae SHA-256: cfaf3733a0449767ed0bef7fdfe3ac339f7b24df9f3f009eea56863cb09e55f3
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, including one pointing to a known malicious redirector at ttraff.ru. The document body, though heavily obfuscated, contains text related to 'Milwaukee brewers schedule 2018 pdf', suggesting a lure to disguise the malicious intent. The primary attack pattern involves redirecting users to malicious infrastructure via embedded links.

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=milwaukee+brewers+schedule+2018+pdf
    • http://diliwisir.namukoreanbbq.com/uploads/1/3/1/6/131637814/5b364c3.pdf
    • http://files.vanessacollingridge.com/uploads/1/3/2/7/132740756/4553385.pdf
    • http://files.midwestgrotto.com/uploads/1/3/2/3/132303351/witujuvurizerufevuno.pdf
    • https://cdn.shopify.com/s/files/1/0432/2190/9662/files/juvib.pdf
    • https://cdn.shopify.com/s/files/1/0431/7950/7872/files/arduino_starter_kit_guide.pdf
    • https://cdn.shopify.com/s/files/1/0431/2625/9876/files/how_to_edit_imovie_trailer_templates_iphone.pdf
    • https://cdn.shopify.com/s/files/1/0431/2052/5476/files/16136689063.pdf
    • https://cdn.shopify.com/s/files/1/0433/7047/9772/files/server_2016_iso.pdf
    • https://cdn.shopify.com/s/files/1/0433/2965/0843/files/actor_jeeva_movie.pdf
    • https://cdn.shopify.com/s/files/1/0438/2546/3456/files/92729886872.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_off000097ec.bin
513064434c06a3fe7694d6b7e91123c5bb26c732764f4b83193986f4b956a481		 pdf-font-stream PDF embedded font (sfnt) at offset 0x97EC 6064 bytes
font_01_sfnt_off0000ac9d.bin
4a423b078e3b5e9525a4767425c11ba0d755555193b17e9e02c740efd8923b77		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAC9D 17280 bytes

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