Malicious PDF — malware analysis report

Static analysis result for SHA-256 a007c7de60d60145…

MALICIOUS

PDF

37.3 KB Created: 2020-08-16 23:38:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 60b63a462c935e4f78c7cad58e73629f SHA-1: 6abb1acdaa27976c31dc9ffd2b4bb84f5c6288c5 SHA-256: a007c7de60d6014563f08eca6f1292c8460db649b925c9dac0619f6325bf735d
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is likely used to obscure the final malicious destination. The document body, though heavily obfuscated, contains references to product names and URLs, suggesting a lure for potential buyers. No scripts were extracted from this sample.

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.cc/pify?keyword=makita+circular+saw+track+guide
    • http://files.suracipaintingllc.com/uploads/1/3/2/6/132681351/mixufapelurab_vipapuxukevudi.pdf
    • http://peruzil.biosciencelabs.co.uk/uploads/1/3/1/4/131407995/nolasiw-wogegasepofiwe.pdf
    • http://files.dailyhustle.store/uploads/1/3/0/7/130739996/vimezew.pdf
    • https://cdn.shopify.com/s/files/1/0436/0021/6232/files/87391127852.pdf
    • https://cdn.shopify.com/s/files/1/0436/9140/9562/files/lexun.pdf
    • https://cdn.shopify.com/s/files/1/0437/8935/3118/files/jutixofojobib.pdf
    • https://cdn.shopify.com/s/files/1/0440/8374/0822/files/japuzil.pdf
    • https://cdn.shopify.com/s/files/1/0438/1717/3149/files/participatory_action_research.pdf
    • https://cdn.shopify.com/s/files/1/0439/1036/5339/files/clay_brick_manufacturing_process.pdf
    • https://cdn.shopify.com/s/files/1/0430/8199/0295/files/93813978262.pdf
    • https://cdn.shopify.com/s/files/1/0451/7930/6135/files/89556802988.pdf
    • https://cdn.shopify.com/s/files/1/0430/6511/4775/files/43876770844.pdf
    • https://cdn.shopify.com/s/files/1/0431/6105/9477/files/zodafiwonabujapekejibipo.pdf
    • https://cdn.shopify.com/s/files/1/0432/2033/6807/files/6358570693.pdf
    • https://cdn.shopify.com/s/files/1/0429/1405/4300/files/44574662365.pdf
    • https://cdn.shopify.com/s/files/1/0434/6963/5746/files/14327519022.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_off000052c1.bin
62f547f71a578b710d308973bbc58429074536d706d8fa7aea0620ad6f548bbd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x52C1 5268 bytes
font_01_sfnt_off000064ca.bin
429e5af5b97fce3604b3160393feccaa3d65b3d09b23377c25374d22b428da15		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64CA 9972 bytes

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