Malicious PDF — malware analysis report

Static analysis result for SHA-256 32e332de4280e6b8…

MALICIOUS

PDF

43.8 KB Created: 2020-08-14 19:16:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4cc65bf30c9671d5eb7a1e9172696cbc SHA-1: 2ead424f068c7ab58227ef3bca7bdbe6f71b0030 SHA-256: 32e332de4280e6b8fb1519d2757b4c50c8a510b11a75fad8f8b5c813755ae5d4
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic identifying a link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=yahoo+messenger++data'. The document body, though heavily obfuscated, contains text fragments related to 'Yahoo messenger data', suggesting a lure. The presence of a link farm heuristic further indicates an attempt to distribute malicious content or redirect users to malicious sites. No scripts were extracted from this sample.

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=yahoo+messenger++data
    • http://files.hensontractorinc.com/uploads/1/3/1/0/131071167/savumiful.pdf
    • http://files.southforkprovisions.net/uploads/1/3/0/8/130874091/9076708.pdf
    • http://pogiwin.worldclasstitle.net/uploads/1/3/1/3/131383483/0c8594b.pdf
    • https://cdn.shopify.com/s/files/1/0431/6954/6395/files/buranutexilix.pdf
    • https://cdn.shopify.com/s/files/1/0433/0664/7717/files/57521185558.pdf
    • https://cdn.shopify.com/s/files/1/0431/7092/2655/files/21337787153.pdf
    • https://cdn.shopify.com/s/files/1/0438/0357/4432/files/bodybuilding_tips_malayalam.pdf
    • https://cdn.shopify.com/s/files/1/0428/6133/0598/files/map_of_the_world.pdf
    • https://cdn.shopify.com/s/files/1/0441/0369/6536/files/21347757696.pdf
    • https://cdn.shopify.com/s/files/1/0435/9946/2558/files/dsm_5_criteria_for_bipolar_disorder.pdf
    • https://cdn.shopify.com/s/files/1/0430/0147/9321/files/foteburelejosi.pdf
    • https://cdn.shopify.com/s/files/1/0427/8019/7031/files/ruterimo.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000063a6.bin
41332c405a6000f99329c67bfc2a70825e488ad9e0bef87a99096a506a7e101e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63A6 5168 bytes
font_01_sfnt_off00007508.bin
7420db9ec41012b263dff8e0d039d2a895961a6b4c1647eabbcd20f441fad98a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7508 1936 bytes
font_02_sfnt_off00007e4f.bin
ff4c527064a95b73c2b7e22d06e1c5005fe1bca578cc4f81170b79e1c3dbbff8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E4F 10632 bytes

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