Malicious PDF — malware analysis report

Static analysis result for SHA-256 eec7343b46458268…

MALICIOUS

PDF

40.6 KB Created: 2020-08-17 14:58:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7e47009c136f2305e1a8ccf5ca43d0dc SHA-1: 3b384cf7326a475cda2ef91ac8610b60265f09ef SHA-256: eec7343b464582686d2ecb29b1ce5b3f05c6fb010ffe6c9a720b108b905f6505
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a redirector service (ttraff.ru) known to host malicious content. The document body, though heavily obfuscated, also contains the URL for the redirector and several other URLs hosted on Shopify and other domains, suggesting a link farm or SEO poisoning tactic to drive traffic to malicious sites. The primary intent appears to be directing users to potentially harmful external resources.

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=dress+code+formal+cocktail
    • http://fugosezen.solsma.com/uploads/1/3/1/3/131383483/7bbdb1204.pdf
    • http://files.aquaelementeliquid.com/uploads/1/3/1/3/131379732/gijug.pdf
    • http://files.middletownbaptistchurchmo.com/uploads/1/3/0/7/130739312/4122267.pdf
    • https://cdn.shopify.com/s/files/1/0436/9681/6282/files/cost_of_asbestos_roofing_sheet_in_nigeria.pdf
    • https://cdn.shopify.com/s/files/1/0431/0165/1105/files/rugeta.pdf
    • https://cdn.shopify.com/s/files/1/0429/8565/2375/files/delodagevekivi.pdf
    • https://cdn.shopify.com/s/files/1/0427/9812/1119/files/kekusajagizirofajokar.pdf
    • https://cdn.shopify.com/s/files/1/0428/2862/8124/files/consultative_selling_skills.pdf
    • https://cdn.shopify.com/s/files/1/0433/5170/3706/files/barakhadi_in_english_chart.pdf
    • https://cdn.shopify.com/s/files/1/0431/5935/5558/files/rurod.pdf
    • https://cdn.shopify.com/s/files/1/0439/3874/2430/files/24452514946.pdf
    • https://cdn.shopify.com/s/files/1/0427/5362/2182/files/pofudajakelegonebomatoz.pdf
    • https://cdn.shopify.com/s/files/1/0429/0913/9111/files/aimsun_software_free.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_off000060c7.bin
60621cd710b12c94dddc1e3d31e3aa0b8d104c6dccbf64a0b42d48a262a8b055		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60C7 5228 bytes
font_01_sfnt_off00007278.bin
7bc8df0f4fa1ee7e1716f0f56df0f53f6746db6e1fc5ced72be6a219ea0aff17		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7278 10420 bytes

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