Malicious PDF — malware analysis report

Static analysis result for SHA-256 b33b765d2c8972fe…

MALICIOUS

PDF

46.3 KB Created: 2020-09-01 05:59:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 83a207891d59da720bd0c596cb2c8314 SHA-1: 6ca5f9eea76bcbd3295af73b87cb44207a861cd9 SHA-256: b33b765d2c8972fe1334444f90e684abcdd5e36a6c6ff272465fd43a60832b0d
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the URL that triggered this finding. The primary purpose appears to be redirecting the user to malicious content via the 'ttraff.ru' domain.

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/wix?keyword=social+media+platforms+in+saudi+arabia
    • https://cdn.shopify.com/s/files/1/0434/3506/5510/files/software_architecture_and_design_tutorialspoint.pdf
    • https://cdn.shopify.com/s/files/1/0428/9075/6259/files/sugor.pdf
    • https://cdn.shopify.com/s/files/1/0435/1413/4692/files/farefukawozumikike.pdf
    • https://cdn.shopify.com/s/files/1/0432/2004/1886/files/sedemad.pdf
    • https://cdn.shopify.com/s/files/1/0434/0645/9032/files/download_free_gospel_ringtones_andro.pdf
    • https://cdn.shopify.com/s/files/1/0431/8173/6096/files/epopeya_de_atrahasis.pdf
    • https://cdn.shopify.com/s/files/1/0437/1061/1607/files/rubij.pdf
    • https://cdn.shopify.com/s/files/1/0431/3900/6632/files/70973780204.pdf
    • https://static.usrfiles.com/ugd/764aaa_f62a01bdb69844afbdd790479e431613.pdf
    • https://static.usrfiles.com/ugd/8cbfce_a755108761114872b59b02021546ceac.pdf
    • https://cdn.shopify.com/s/files/1/0432/3550/8387/files/alsager_school_6th_form.pdf
    • https://cdn.shopify.com/s/files/1/0431/0453/4692/files/compress_large_file_size_online_free.pdf
    • https://cdn.shopify.com/s/files/1/0430/1550/4029/files/27463491705.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/
    • https://cdn.shopify.com/s/fi

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000749a.bin
0a2d7e072b7ec0ed7b009efbb480aa176fd30eb653919789168db6825576bc4a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x749A 5544 bytes
font_01_sfnt_off00008755.bin
d03aed0b0f7d82de279e834cdf649e42f09e57963a8ce5ead242aacabd19d362		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8755 10764 bytes

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