Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1d9a786652eb55a…

MALICIOUS

PDF

44.4 KB Created: 2020-08-20 20:58:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8a9d816a0f2d70fa345b34b2965551ab SHA-1: fceca5f225136822e943faf3ebbf70e1d8a5ba34 SHA-256: b1d9a786652eb55ab13bd063ed6f778f408ae15f41612c56144d06386f345302
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 pointing to Shopify domains, but one critical link directs to a known malicious redirector at ttraff.com. The document body, though heavily obfuscated, contains the text "Google site blog template" and the malicious URL, suggesting a lure for users interested in website templates. The heuristic firings confirm the presence of a malicious redirector link and a PDF link farm, indicating a likely phishing or SEO manipulation attack.

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=google+site+blog+template
    • http://digata.funny-jokes-quotes.com/uploads/1/3/1/3/131379021/xaxureveselil.pdf
    • https://cdn.shopify.com/s/files/1/0431/0119/2352/files/vefekagisenuvetonilova.pdf
    • https://cdn.shopify.com/s/files/1/0429/3161/7945/files/sefamumeletimazibi.pdf
    • https://cdn.shopify.com/s/files/1/0435/5879/7471/files/vulexibowuguzapiwijodamej.pdf
    • https://cdn.shopify.com/s/files/1/0432/7797/5717/files/28368245457.pdf
    • https://cdn.shopify.com/s/files/1/0437/2201/4870/files/kanaxilobevuvuvemo.pdf
    • https://cdn.shopify.com/s/files/1/0439/8913/9614/files/87497452655.pdf
    • https://cdn.shopify.com/s/files/1/0436/2865/8848/files/dibaxek.pdf
    • https://cdn.shopify.com/s/files/1/0428/6434/5255/files/applied_physics_1_mumbai_university.pdf
    • https://cdn.shopify.com/s/files/1/0438/8628/0872/files/bajatuguzivasomufas.pdf
    • https://cdn.shopify.com/s/files/1/0428/9606/4671/files/40996069800.pdf
    • https://cdn.shopify.com/s/files/1/0431/5391/6053/files/car_aircon_troubleshooting_guide.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_off00006fe6.bin
b2012c43a1b22b2e023c2d74347b18c415c2032937d7d701d3cd99ea29e65883		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FE6 5212 bytes
font_01_sfnt_off0000819d.bin
728071b0851b83e9688e67899d93f7945778c35512f240b0ed2c19dd57245b84		 pdf-font-stream PDF embedded font (sfnt) at offset 0x819D 10456 bytes

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