Malicious PDF — malware analysis report

Static analysis result for SHA-256 9902fe51f4d12c16…

MALICIOUS

PDF

40.5 KB Created: 2020-08-16 18:29:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 535de4b054675691e661d311a8dfed7e SHA-1: 1a2e143a27fbebb4b52c5357f981cfb15f1052c7 SHA-256: 9902fe51f4d12c1602ce4383f2f2f9b77c11048f06d922d4c27ba654ac507594
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, directing users to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many pointing to Shopify domains, likely for SEO manipulation or to obscure malicious intent. The primary malicious URL identified is 'https://ttraff.com/pify?keyword=cochise+stronghold+climbing+guides'. Another suspicious URL found is 'http://ramol.polonskyfilm.com/uploads/1/3/2/6/132680813/1c6fb63da.pdf'. The document body, though heavily obfuscated, contains references to the malicious URL.

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.com/pify?keyword=cochise+stronghold+climbing+guides
    • http://ramol.polonskyfilm.com/uploads/1/3/2/6/132680813/1c6fb63da.pdf
    • https://cdn.shopify.com/s/files/1/0431/2160/6820/files/66308570391.pdf
    • https://cdn.shopify.com/s/files/1/0427/6705/7063/files/79979683167.pdf
    • https://cdn.shopify.com/s/files/1/0429/3217/5014/files/atoms_and_molecules_class_9_notes.pdf
    • https://cdn.shopify.com/s/files/1/0434/0334/6078/files/42683675352.pdf
    • https://cdn.shopify.com/s/files/1/0431/4916/4705/files/jasafe.pdf
    • https://cdn.shopify.com/s/files/1/0427/7154/6279/files/luvavude.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/49839171509.pdf
    • https://cdn.shopify.com/s/files/1/0437/4082/3706/files/google_docs_anonymous.pdf
    • https://cdn.shopify.com/s/files/1/0438/3378/6518/files/nakavovob.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_off00006101.bin
ab474375de74c73f66a797be10e9b1031c60cf6881fdf50f61f6403617f8b17a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6101 5188 bytes
font_01_sfnt_off0000726d.bin
451e7398c2d1594fe04a29a765d3b498dd8b59f103ec717452d3045a175c2d7f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x726D 10212 bytes

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