Malicious PDF — malware analysis report

Static analysis result for SHA-256 b06e409dd3429491…

MALICIOUS

PDF

48.6 KB Created: 2020-07-29 03:49:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 46f1a6ded571bf18fdd086eef12f70f5 SHA-1: 2466f134fb4194393cbd4e613b2bfed495cabde4 SHA-256: b06e409dd34294912bb9841d096111fdc2f690e682ef2686a6409bc720fe0713
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, a significant portion of which point to a redirector service (ttraff.ru) that is known to host malicious content. The document body and embedded links are designed to appear as legitimate academic resources, likely to lure users into clicking the malicious links. The heuristic firings indicate a malicious redirector and a link farm, supporting the conclusion that this is a phishing or redirection attack. No scripts were extracted, limiting the analysis of further stages.

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/wb?keyword=foundations%20of%20computer%20science%204th%20edition%20behrouz%20a.%20forouzan%20pdf
    • http://files.veeradonuts.com/uploads/1/3/1/3/131398076/4d408ced51.pdf
    • http://files.forthestudentsuh.com/uploads/1/3/2/8/132814155/sewogaf.pdf
    • http://files.vipagroup.org/uploads/1/3/2/6/132696104/nevopevusixejex-xumenawiv-mojemetiwasaja.pdf
    • https://cdn.shopify.com/s/files/1/0432/2190/9659/files/14650583304.pdf
    • https://cdn.shopify.com/s/files/1/0432/7643/5621/files/48478450197.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/benubojebexoreloruva.pdf
    • https://cdn.shopify.com/s/files/1/0435/3271/4139/files/nakaw.pdf
    • https://cdn.shopify.com/s/files/1/0437/0196/0854/files/wozofanag.pdf
    • https://cdn.shopify.com/s/files/1/0432/8960/8360/files/gelunawafeno.pdf
    • https://cdn.shopify.com/s/files/1/0434/2788/9304/files/52884555847.pdf
    • https://cdn.shopify.com/s/files/1/0433/1352/8987/files/fupumokanadive.pdf
    • https://cdn.shopify.com/s/files/1/0441/0333/6088/files/19941534234.pdf
    • https://cdn.shopify.com/s/files/1/0431/2891/4074/files/dafido.pdf
    • https://cdn.shopify.com/s/files/1/0433/4249/5895/files/93208923748.pdf
    • https://cdn.shopify.com/s/files/1/0432/2597/2904/files/lubozuxinigoforikilobewip.pdf
    • https://cdn.shopify.com/s/files/1/0438/7497/5912/files/sixesexurevew.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vekedexixerokasadoboma.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/

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000060e6.bin
37799bb798e83ac48ce58931605b41bb740fed810d5c1d729a522e5db0731ecb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60E6 5512 bytes
font_01_sfnt_off00007386.bin
1c0ec1f334037b56464d6e967f5c7b267ac7f0f17e840b5463414b86ad9a6bbb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7386 10004 bytes
font_02_sfnt_off000095f4.bin
f445d771a9fddec3a392e932c8a7a35224482514ba01793daefebe06dc746517		 pdf-font-stream PDF embedded font (sfnt) at offset 0x95F4 16616 bytes
font_03_sfnt_off0000ac79.bin
1648accd5638f26481c437d0e436fdfb03edab78dab75f4e73239278c8cddc19		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAC79 1736 bytes

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