Malicious PDF — malware analysis report

Static analysis result for SHA-256 bea83a2a4e527daf…

MALICIOUS

PDF

50.4 KB Created: 2020-08-28 05:01:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 448b63c1e7c3631de74f94c01e6651f1 SHA-1: b9759805281b1f7974026a299acaabcb3c348c88 SHA-256: bea83a2a4e527daf30c86489e8269ca3f5763d594b537511c9981252bd455734
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a link to a known malicious redirector, ttraff.cc, which is likely used to obscure the final destination of the malicious payload. The document also hosts a large number of external PDF links, many pointing to Shopify domains, suggesting a link farm or SEO poisoning tactic to increase visibility. No scripts were extracted, and the document body is heavily obfuscated, making it difficult to determine the exact nature of the payload beyond the initial redirection.

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=cherry+animal+crossing
    • http://files.bioacousticresearch.com/uploads/1/3/1/6/131606638/detevaxem.pdf
    • http://lubusawi.kerncanineactivities.com/uploads/1/3/1/4/131437423/5785740.pdf
    • http://files.tinaspicks.com/uploads/1/3/0/7/130738568/d6e09.pdf
    • http://files.clowncabaretnight.com/uploads/1/3/1/4/131408103/wanobinogijagu-nibededo-gajojorak.pdf
    • http://files.briggsquarterhorses.com/uploads/1/3/1/4/131453206/8311389.pdf
    • https://cdn.shopify.com/s/files/1/0433/7133/1734/files/94634810841.pdf
    • https://cdn.shopify.com/s/files/1/0438/9827/3944/files/80681911136.pdf
    • https://cdn.shopify.com/s/files/1/0433/9345/0134/files/winipesabesegokixa.pdf
    • https://cdn.shopify.com/s/files/1/0431/9612/1248/files/sikimukaf.pdf
    • https://cdn.shopify.com/s/files/1/0434/8693/7253/files/saliriruzexaliti.pdf
    • https://cdn.shopify.com/s/files/1/0430/6989/8914/files/suvesinuxususara.pdf
    • https://cdn.shopify.com/s/files/1/0431/1125/2132/files/23936529470.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005e49.bin
d1a145759a7cfc4aab4d9688603b28d95f6c4049175ea5972f87950a26edc0ef		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E49 5132 bytes
font_01_sfnt_off0000707f.bin
920231056129c319786cb867402cd529bd093411992d14cb1309feb4c08c01b6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x707F 5220 bytes
font_02_sfnt_off0000821b.bin
56d43e804ece4eac855549c8ad994f93412272565fd46db291b5537221dc1449		 pdf-font-stream PDF embedded font (sfnt) at offset 0x821B 10684 bytes
font_03_sfnt_off0000a6d4.bin
0318b400cbd4eb80818b7eb131bcca2e18f343f850c5eb1573e525fea31f4d56		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA6D4 16204 bytes

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