Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c9d1cde65ac081e…

MALICIOUS

PDF

48.4 KB Created: 2020-08-30 19:40:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c28cc75754180415dda3374fbd2db955 SHA-1: 7340d5c8635958f810a79e086adc1f444ce37b1e SHA-256: 2c9d1cde65ac081e1e7c8bd1795e1f919b5936057c96bedc49314f0fbdab2ab1
140 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1598.001 URL Discovery: Phishing For Information

The PDF contains a large number of embedded links, many pointing to what appears to be a link farm designed for SEO manipulation. One critical heuristic indicates a direct link to a known malicious redirector at 'https://ttraff.ru/wix?keyword=gold+pants+mii+qr+codes'. The document body, though heavily obfuscated, also contains this URL and other PDF links. The presence of a QR code lure heuristic further suggests a phishing or redirection attempt.

Heuristics 4

  • 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.
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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=gold+pants+mii+qr+codes
    • https://cdn.shopify.com/s/files/1/0435/2973/2248/files/kigugi.pdf
    • https://cdn.shopify.com/s/files/1/0433/7192/1571/files/59272132816.pdf
    • https://cdn.shopify.com/s/files/1/0434/4204/5090/files/adobe_for_macbook_pro.pdf
    • https://static.usrfiles.com/ugd/b8c837_2986a01e740a42bebdd0852c6651dd67.pdf
    • https://static.usrfiles.com/ugd/c068f8_f283093d8e12417faef9892331e4074a.pdf
    • https://static.usrfiles.com/ugd/362633_c5f2675e73ae44a6aee4fc6c988d5a6d.pdf
    • https://static.usrfiles.com/ugd/b8c837_c6913ae6bdec4ea0aebe9d4c3286ee4c.pdf
    • https://static.usrfiles.com/ugd/ecec20_5e79256920ac4cf9aa5028e2ddb00180.pdf
    • https://static.usrfiles.com/ugd/136d07_6b6b576c80a14b8e9f9f184d60a072ff.pdf
    • https://static.usrfiles.com/ugd/a4e402_fd784d8c9072404a9d091da4953045f1.pdf
    • https://static.usrfiles.com/ugd/b8c837_f702f7ca07b3449f80b3d98b7fa04ab3.pdf
    • https://static.usrfiles.com/ugd/b8c837_d3e1e33ee8e147dd8f8349ff164afa72.pdf
    • https://static.usrfiles.com/ugd/b8c837_b5454b90080f4979982861724bee7770.pdf
    • https://static.usrfiles.com/ugd/ba3095_be291474d9bb4311a367da6b0fa038c6.pdf
    • https://static.usrfiles.com/ugd/b8c837_c73b640a1b314033a10e4d1afbca21dc.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
stream_005_off00009731.bin
88f6dde65e4bd5a749649ba906927c11ae45dab326b92918b6e6817f41f93725
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x9731 18544 bytes
font_00_sfnt_off000061bf.bin
e740d4fec85e898efffbe710836011d13074c7f9536cf842721e51e333a0dc63
pdf-font-stream PDF embedded font (sfnt) at offset 0x61BF 5376 bytes
font_01_sfnt_off000073f1.bin
37f18c74fa9c2c57a8bc6f88ba40bea95cf1258271342f46a666f237e574c775
pdf-font-stream PDF embedded font (sfnt) at offset 0x73F1 10412 bytes