Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8ea4d47d8bc7038…

MALICIOUS

PDF

45.7 KB Created: 2020-08-30 03:17:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9801356802699de17015754023e0b835 SHA-1: 3c74398e8b4a8d615586ec54066919ffc01bd128 SHA-256: d8ea4d47d8bc7038bb6a609959171b897abfb8f5f963697ded23d3c25c3b2319
150 Risk Score

Malware Insights

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

The PDF file was flagged by multiple critical heuristics for containing malicious redirector links and being part of a link farm. The primary malicious URL identified is https://ttraff.ru/wix?keyword=chupke+chupke+raat+din+aansu+bahana, which is likely used to direct users to a harmful destination. The document body contains garbled text and embedded URLs, further supporting the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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/wix?keyword=chupke+chupke+raat+din+aansu+bahana
    • https://static.usrfiles.com/ugd/b8c837_94a734d428014021b55e1f01f855b377.pdf
    • https://static.usrfiles.com/ugd/9219f8_3ae4ff461edd4c9cb4fe221f13701acd.pdf
    • https://static.usrfiles.com/ugd/b8c837_3ed2aaded1c3425d813f5387c4679206.pdf
    • https://cdn.shopify.com/s/files/1/0434/5063/0296/files/20134800308.pdf
    • https://cdn.shopify.com/s/files/1/0438/6075/4582/files/attacking_network_protocols_forshaw.pdf
    • https://cdn.shopify.com/s/files/1/0436/7400/9753/files/betudomipilapofurusi.pdf
    • https://cdn.shopify.com/s/files/1/0460/8691/4212/files/tera_nude_mod.pdf
    • https://cdn.shopify.com/s/files/1/0438/8998/3643/files/65489243039.pdf
    • https://static.usrfiles.com/ugd/067ecb_6366f48eb7d943dbb52707688a55a731.pdf
    • https://static.usrfiles.com/ugd/a6e5e9_b2334e1bab534bb0b2c099806af0d0a9.pdf
    • https://static.usrfiles.com/ugd/87b9a8_1122201b8b2f439a9619998973449587.pdf
    • https://static.usrfiles.com/ugd/b8c837_41a4300a82a9462787159e78bc8f7f84.pdf
    • https://static.usrfiles.com/ugd/b8c837_9bc2e08d076f4eeaba5a49481af29a07.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/5552762143.pdf
    • https://cdn.shopify.com/s/files/1/0438/1917/2000/files/zuwuvatud.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_off000061b4.bin
3646bac6358dc2945c3eec51f9752a53fb413136a8fa94fd36cf7c4c015e7079		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61B4 5240 bytes
font_01_sfnt_off0000736c.bin
d55e3e24b1740b6d75162ba8b8dfc1f9c1e62c291b951630dac3f1b34800735a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x736C 13224 bytes
font_02_sfnt_off00009b84.bin
92064393a5df93eef9b5245b709896716703cc21c6b1f378a3567bbd7b13732e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9B84 3744 bytes

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