Malicious PDF — malware analysis report

Static analysis result for SHA-256 214c827fcd08e78c…

MALICIOUS

PDF

44.9 KB Created: 2020-08-15 04:38:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c3bc701e07d77ec22fbe6219a9e93cf5 SHA-1: a4ad2fa42d775c24e1c5c1467d3021645fd1329c SHA-256: 214c827fcd08e78c696da04e0bf3e0100feb2cb06e9533178f67d518ef81c8b5
150 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The primary malicious URL identified is https://ttraff.ru/pify?keyword=kong+api+gateway+tutorial+pdf, which is likely used to redirect users to further malicious content. The document body, though heavily obfuscated, contains references to the malicious URL and other benign-looking PDF links, suggesting a link farm or redirection tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=kong+api+gateway+tutorial+pdf
    • http://files.broomandblackberries.com/uploads/1/3/2/6/132682070/tefojonosove_wufiwudusabex_ronufepaves.pdf
    • http://favotane.rabbimeltzer.com/uploads/1/3/2/6/132695615/giwuluterogidaf-sigejuta-fimif.pdf
    • https://cdn.shopify.com/s/files/1/0438/0845/6865/files/93793996091.pdf
    • https://cdn.shopify.com/s/files/1/0434/2729/9478/files/interview_questions_on_c_c_and_java_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0438/0252/5856/files/xiranojafoxor.pdf
    • https://cdn.shopify.com/s/files/1/0433/4023/4902/files/65419062615.pdf
    • https://cdn.shopify.com/s/files/1/0433/1687/1333/files/41884284874.pdf
    • https://cdn.shopify.com/s/files/1/0427/6961/2966/files/kefuraxewejefi.pdf
    • https://cdn.shopify.com/s/files/1/0431/1210/4103/files/1684729382.pdf
    • https://cdn.shopify.com/s/files/1/0430/6622/8898/files/55881522922.pdf
    • https://cdn.shopify.com/s/files/1/0428/5156/5724/files/livro_cinquenta_tons_de_liberdade_online.pdf
    • https://cdn.shopify.com/s/files/1/0427/8353/9366/files/marine_protected_areas.pdf
    • https://cdn.shopify.com/s/files/1/0434/4286/4289/files/45595208528.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_off00006cfa.bin
81f08a1cd62d9d624ce78a52c620082f7639f79d8d625bbcf1372b0320e3f577		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CFA 5192 bytes
font_01_sfnt_off00007ed4.bin
c2ef0c32de0bc04c05d3025383f214180cc99e3a55a5d714c03aa1082a40fd07		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7ED4 12464 bytes

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