Malicious PDF — malware analysis report

Static analysis result for SHA-256 921316abc6211674…

MALICIOUS

PDF

38.3 KB Created: 2020-08-18 14:51:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4d3ad80bc8d751383c88b451d1a890c6 SHA-1: d6248e9597cc9c42717f1f56d9855af96fdab620 SHA-256: 921316abc62116742ae35163cb3d121d0b72d2f4b5c25fbe8a4b8da15a2968c0
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, specifically pointing to 'ttraff.cc'. The document body, though heavily obfuscated, also contains this URL and numerous other links to Shopify-hosted PDFs, suggesting a link farm or redirection strategy. The primary intent appears to be directing the user to malicious infrastructure via the 'ttraff.cc' redirector.

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=bhojpuri+song+dj+remix+free
    • http://files.lazatcooking.com/uploads/1/3/1/4/131438759/8528914.pdf
    • https://cdn.shopify.com/s/files/1/0434/0655/7345/files/canalyzer_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0430/4617/4877/files/98549299217.pdf
    • https://cdn.shopify.com/s/files/1/0433/1018/6654/files/balanced_diet_plan.pdf
    • https://cdn.shopify.com/s/files/1/0429/9672/7957/files/international_airport_codes_list.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zenafepejeviwasi.pdf
    • https://cdn.shopify.com/s/files/1/0431/4637/9426/files/53363959747.pdf
    • https://cdn.shopify.com/s/files/1/0428/6355/8815/files/saramozimewozibev.pdf
    • https://cdn.shopify.com/s/files/1/0432/8338/2427/files/kizasivoxadenefese.pdf
    • https://cdn.shopify.com/s/files/1/0432/2790/6206/files/10655463850.pdf
    • https://cdn.shopify.com/s/files/1/0433/9607/1578/files/kixufexemunadekivinolarib.pdf
    • https://cdn.shopify.com/s/files/1/0428/1889/6038/files/ripejelinumefafimusam.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000045f1.bin
93fce21401931e0e8df7c7fed5250721e30bc2263b8ea4e663fb992b313c0e1f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x45F1 5408 bytes
font_01_sfnt_off0000583a.bin
3632fdf6e5b36bebf128c79f9c536a4ea2c2841ab362523119ff234efb04818f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x583A 10564 bytes
font_02_sfnt_off00007c4a.bin
8db5c682d87319e9020b418ef44976b439ccda0bc4f009cdd1314aa86ec5757e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C4A 4220 bytes

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