Malicious PDF — malware analysis report

Static analysis result for SHA-256 d67f7d390736db42…

MALICIOUS

PDF

46.5 KB Created: 2020-08-07 05:53:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5c5672d081c9cdbf5b0ae89c3c4374d7 SHA-1: 2bf78491053c13323d87d490dd16e778804817cc SHA-256: d67f7d390736db42abad6995f6c5faa57f8b314f6a5b3ecbb1fe14067013b023
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'. The document body, though heavily obfuscated, contains a reference to the same URL, suggesting a lure to a malicious site. The PDF also contains a mass external PDF link farm, with the first URL being 'cdn.shopify.com/s/files/1/0428/7240/6179/files/number_analogy_for_ssc_exam.pdf'. This indicates a social engineering attempt to redirect users to potentially malicious content.

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=pwc+global+blockchain+survey+pdf
    • http://dupig.pinecityhistory.com/uploads/1/3/1/4/131453870/e3c1b.pdf
    • http://files.heracleous.org/uploads/1/3/0/8/130874324/3950971.pdf
    • http://files.michaelbrownslawoffice.com/uploads/1/3/1/4/131406762/xajixolaxexojobegu.pdf
    • http://files.christinaperritt.co.uk/uploads/1/3/0/7/130776519/ca0ec33cae77f.pdf
    • http://files.nyqdma.org/uploads/1/3/2/7/132740435/mapaxukoluvud.pdf
    • https://cdn.shopify.com/s/files/1/0428/7240/6179/files/number_analogy_for_ssc_exam.pdf
    • https://cdn.shopify.com/s/files/1/0428/3318/2886/files/class_11_chemistry_ncert_book_download_in_gujarati.pdf
    • https://cdn.shopify.com/s/files/1/0429/8155/6375/files/62813730549.pdf
    • https://cdn.shopify.com/s/files/1/0429/2398/3001/files/80863359824.pdf
    • https://cdn.shopify.com/s/files/1/0440/5320/1046/files/confirmed_in_the_spirit_answer_key.pdf
    • https://cdn.shopify.com/s/files/1/0430/7956/5465/files/loki_s_vault_of_borrowed_items.pdf
    • https://cdn.shopify.com/s/files/1/0438/3640/7973/files/lujamepewupulenixud.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lufixupiz.pdf
    • https://cdn.shopify.com/s/files/1/0438/8729/6680/files/threat_level_mhw.pdf
    • https://cdn.shopify.com/s/files/1/0430/9693/2505/files/99555025040.pdf
    • https://cdn.shopify.com/s/files/1/0432/0981/8272/files/29247286361.pdf
    • https://cdn.shopify.com/s/files/1/0427/9861/2636/files/biwizowetufur.pdf
    • https://cdn.shopify.com/s/files/1/0430/5253/1869/files/bifebanukewakolulojo.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_off00006ce9.bin
34239f5a7b8d7152cfb0b2edad66a5f102271033a470611d5dbfc1ad612ad4e2
pdf-font-stream PDF embedded font (sfnt) at offset 0x6CE9 5876 bytes
font_01_sfnt_off00008101.bin
f171de7b8bc52b5d211302e210e0f376f708bed66f7fa948c4857512d0c69eb0
pdf-font-stream PDF embedded font (sfnt) at offset 0x8101 14084 bytes