Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f3e8bbdb058eec2…

MALICIOUS

PDF

40.7 KB Created: 2020-07-30 09:09:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 474540ab153d0ad37148f0773de06ab0 SHA-1: e2b368abac2586df489bfae3f0f066fc861a385b SHA-256: 1f3e8bbdb058eec2cedf3f99a1fab4226400a0e371b541c073bc1c6e384f2bd6
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF SEO link farm, with numerous embedded links, many pointing to Shopify domains. The primary malicious URL is 'https://ttraff.com/pify?keyword=elkington+cannibals+with+forks+pdf', which is likely used to redirect users to a phishing or malware-hosting site. The document body is heavily obfuscated and unreadable.

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=elkington+cannibals+with+forks+pdf
    • http://files.dosuccess.co.uk/uploads/1/3/2/6/132695525/18eb031146b7f1.pdf
    • http://files.aslteen.com/uploads/1/3/1/6/131606755/favomuso.pdf
    • http://files.hillhousevrujci.com/uploads/1/3/0/7/130775197/6445459.pdf
    • https://cdn.shopify.com/s/files/1/0433/9800/4899/files/12161373409.pdf
    • https://cdn.shopify.com/s/files/1/0428/6762/2055/files/64808029926.pdf
    • https://cdn.shopify.com/s/files/1/0431/4349/5841/files/fidelovesolidudo.pdf
    • https://cdn.shopify.com/s/files/1/0440/2728/1558/files/77170168550.pdf
    • https://cdn.shopify.com/s/files/1/0433/7260/9686/files/91956090100.pdf
    • https://cdn.shopify.com/s/files/1/0433/9934/8389/files/38251078147.pdf
    • https://cdn.shopify.com/s/files/1/0430/1661/8145/files/98007175855.pdf
    • https://cdn.shopify.com/s/files/1/0429/7415/0809/files/64957846533.pdf
    • https://cdn.shopify.com/s/files/1/0437/9960/9505/files/gemativekibeduf.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/dazexirorojukulovamedifuv.pdf
    • https://cdn.shopify.com/s/files/1/0434/6108/3301/files/64270815262.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wesani.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mitev.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_off000060cb.bin
dd127d705bd9fa8696baccdc2e642b16c259aed13ed4068fbd741f15801bbc06		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60CB 5340 bytes
font_01_sfnt_off000072eb.bin
8e614f3782c473707791a41ef5219a2815798320155cb02aee7cff9666464c58		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72EB 10196 bytes

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