Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd593c123489162b…

MALICIOUS

PDF

49.7 KB Created: 2020-08-12 00:53:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4bfafc84ec1f9867420392f864b4e041 SHA-1: 40bb067ee680dcb2f8f906ff6f4def43b9fb215f SHA-256: fd593c123489162b753872eac8ef7b793a1fadad00ad9dfb2d3acb86a84d64bc
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to ttraff.ru. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, many hosted on cdn.shopify.com. The document body, though heavily obfuscated, contains the same redirector URL. This suggests the primary goal is to trick users into clicking the link, leading them to malicious infrastructure.

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=agriculture+machine+picture+and+uses+pdf
    • http://files.graico.com/uploads/1/3/2/6/132695818/daginomomu.pdf
    • http://files.mosaicartsfestival.com/uploads/1/3/2/6/132683080/dunitotabepaxu-kaguxibidu-lapusexavemu.pdf
    • http://files.shift-counselling.com/uploads/1/3/1/3/131381450/sovabidelanodo.pdf
    • http://files.sweethomeelegance.com/uploads/1/3/1/0/131070327/4981564.pdf
    • http://voziwoxi.kinderdancemetrostl.com/uploads/1/3/0/8/130814328/6302927.pdf
    • https://cdn.shopify.com/s/files/1/0435/1534/7103/files/vuponapifuviponuwufisir.pdf
    • https://cdn.shopify.com/s/files/1/0438/4204/4066/files/36121297689.pdf
    • https://cdn.shopify.com/s/files/1/0429/9541/7237/files/tata_docomo_arbitration_award.pdf
    • https://cdn.shopify.com/s/files/1/0431/1734/6965/files/66662169486.pdf
    • https://cdn.shopify.com/s/files/1/0432/3092/0871/files/6605713236.pdf
    • https://cdn.shopify.com/s/files/1/0430/9660/4825/files/lusagedemutad.pdf
    • https://cdn.shopify.com/s/files/1/0432/6051/0376/files/82472299971.pdf
    • https://cdn.shopify.com/s/files/1/0433/9240/1573/files/46486517756.pdf
    • https://cdn.shopify.com/s/files/1/0433/0841/7192/files/4chan_file_size_limit.pdf
    • https://cdn.shopify.com/s/files/1/0431/8222/7617/files/bayesian_probability_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0432/1335/7214/files/voltaire_candide_magyar.pdf
    • https://cdn.shopify.com/s/files/1/0430/5597/2501/files/mechanical_engineering_projects_download.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_off000082ee.bin
1e02be01c9e3cb14e8efee17427421ddb2d12135ee9f2bafefbf8670467e8806		 pdf-font-stream PDF embedded font (sfnt) at offset 0x82EE 5556 bytes
font_01_sfnt_off000095aa.bin
b97a2a32c2544c3db1703be956de48d835a55dc8940de397e79c213f44ac80eb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x95AA 10528 bytes

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