Malicious PDF — malware analysis report

Static analysis result for SHA-256 a217cb1cc6f588dd…

MALICIOUS

PDF

55.6 KB Created: 2020-08-09 03:34:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 927961e1f1d6d8c8de18becec9c983e1 SHA-1: ddd5cf5b41c132028aebbc84af683d2d17609c14 SHA-256: a217cb1cc6f588ddce922c360478b7bd5433b31402300288be3fe42bb32db16a
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, identified as a PDF link farm. One of these links, 'https://ttraff.ru/pify?keyword=benzoilmetronidazol+ems+bula+pdf', points to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains this URL, suggesting the primary purpose is to lure users to malicious sites.

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=benzoilmetronidazol+ems+bula+pdf
    • http://files.philiphuddlestonephotography.com/uploads/1/3/1/0/131070508/lobamebamo.pdf
    • http://kudeziv.oewolfparents.com/uploads/1/3/0/7/130738720/4920a50f34c6.pdf
    • http://files.adventurebikecomponents.com.au/uploads/1/3/1/6/131636712/abfdef1fa9a4.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xovigaza.pdf
    • https://cdn.shopify.com/s/files/1/0431/1282/4993/files/use_case_diagram_for_bank_management_system.pdf
    • https://cdn.shopify.com/s/files/1/0431/6109/2250/files/falugaka.pdf
    • https://cdn.shopify.com/s/files/1/0434/7274/8710/files/52261271703.pdf
    • https://cdn.shopify.com/s/files/1/0429/3437/0470/files/dugubinul.pdf
    • https://cdn.shopify.com/s/files/1/0432/8921/5129/files/afman_24_204_july_2020.pdf
    • https://cdn.shopify.com/s/files/1/0433/9289/3093/files/refanowitebozefugibebu.pdf
    • https://cdn.shopify.com/s/files/1/0431/4251/2797/files/64700077044.pdf
    • https://cdn.shopify.com/s/files/1/0437/9272/8226/files/80547808324.pdf
    • https://cdn.shopify.com/s/files/1/0435/0138/7936/files/tapaberuzexop.pdf
    • https://cdn.shopify.com/s/files/1/0439/6895/4526/files/hemostasis_casebook.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_off00009a3c.bin
121ed2acc9aefb9909d0ab0d1886510e014378e762c8f34e7738877741ab139d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9A3C 5428 bytes
font_01_sfnt_off0000ac99.bin
604e9ce072cc7d74b9d4d3230ff2f4e9880c371306ed1df567be167bd82ae453		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAC99 10976 bytes

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