Malicious PDF — malware analysis report

Static analysis result for SHA-256 1fbf811c9ef8ee5a…

MALICIOUS

PDF

36.7 KB Created: 2020-08-16 14:43:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 64503cd9dcd97ef6f907c9f7ba0c54a1 SHA-1: ccc1017e3ed472d95a6dea75260c805a64a8cff9 SHA-256: 1fbf811c9ef8ee5a1f89482324f6ea64a6276fc4d5023fae1172398744df1063
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic identifying a malicious redirector at 'https://ttraff.ru/pify?keyword=pirate+sound+effects+free'. The document body, though heavily obfuscated, contains text related to 'Pirate sound effects free' and the malicious URL, suggesting a lure to a malicious site. The presence of a link farm heuristic further supports the malicious intent of directing users to external, potentially harmful, content.

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/pify?keyword=pirate+sound+effects+free
    • http://fosamit.chen-lu.co/uploads/1/3/0/7/130739267/pawinofij_tuwusasox_nubirevo_sovaroletu.pdf
    • http://xazifudap.rosenetwork.org/uploads/1/3/1/4/131437871/4222562.pdf
    • https://cdn.shopify.com/s/files/1/0439/5096/4904/files/26374080447.pdf
    • https://cdn.shopify.com/s/files/1/0429/7143/1065/files/43777109688.pdf
    • https://cdn.shopify.com/s/files/1/0429/6045/3785/files/40870104530.pdf
    • https://cdn.shopify.com/s/files/1/0434/2009/0535/files/jonadijopurikozukuwu.pdf
    • https://cdn.shopify.com/s/files/1/0437/6326/9789/files/apa_manual_6th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0428/0428/1511/files/jejij.pdf
    • https://cdn.shopify.com/s/files/1/0434/0023/3112/files/xaxufimewejafixuzegoveju.pdf
    • https://cdn.shopify.com/s/files/1/0438/6743/9264/files/36243250685.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_off000047ff.bin
47b9d1e94f7e349c293ebb35b9cf95c8bc164ac4fdef55a1f583edef93db5495		 pdf-font-stream PDF embedded font (sfnt) at offset 0x47FF 4864 bytes
font_01_sfnt_off0000588b.bin
c67f9cb35930fb79b8abaa59998fc527f1fd1210514983422804ae7c3620b59a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x588B 9420 bytes
font_02_sfnt_off000078a4.bin
ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78A4 4324 bytes

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