Malicious PDF — malware analysis report

Static analysis result for SHA-256 467b30cd92ff9695…

MALICIOUS

PDF

47.5 KB Created: 2020-09-01 13:32:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5d8d7c383eddb0bc377d6095e7432e01 SHA-1: 4ce2513c3a300f6f09fdb4b10f8cc57a88c85992 SHA-256: 467b30cd92ff969504775061ceaa992cb6fa735d7900eb73811b83ad2348906a
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing indicating a link to a known malicious redirector. The document body, though heavily obfuscated, contains text related to '12th english grammar questions and answers pdf' and the malicious URL, suggesting a lure to trick users into clicking the link. The presence of a link farm further supports the malicious intent of redirecting users to potentially harmful sites.

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=12th+english+grammar+questions+and+answers+pdf
    • https://static.usrfiles.com/ugd/d54300_cd8e7bab815e410fa38f5bd581e26961.pdf
    • https://static.usrfiles.com/ugd/f09a9d_7ad83cf1d74c4c33b052fd7d9499a66b.pdf
    • https://static.usrfiles.com/ugd/5438e3_6fc6480e24c740d8af8a8dfa70e5acc4.pdf
    • https://static.usrfiles.com/ugd/b8c837_62918db86f814b9ab2c56ab61585f3c0.pdf
    • https://static.usrfiles.com/ugd/dc98cc_8b245b14cd33497da6d4344db9fe9694.pdf
    • https://cdn.shopify.com/s/files/1/0429/4665/8463/files/zirudenezuxumikerarofi.pdf
    • https://cdn.shopify.com/s/files/1/0440/8462/5558/files/25733930175.pdf
    • https://cdn.shopify.com/s/files/1/0431/3923/5997/files/dixonadowabifeked.pdf
    • https://static.usrfiles.com/ugd/9e53d4_4a2f6cba73c4405f8424ad2b382162d7.pdf
    • https://static.usrfiles.com/ugd/b8c837_1f15bf8ca81d47c7aa6493ce4159c306.pdf
    • https://static.usrfiles.com/ugd/1be480_96867d43ac7a4f5ba4d79e60fa4557ba.pdf
    • https://static.usrfiles.com/ugd/b8c837_5bde45607d7d45798d5c14c2ef08990e.pdf
    • https://static.usrfiles.com/ugd/b8c837_3b6e3b6021034155861f02ebd27a7b7e.pdf
    • https://cdn.shopify.com/s/files/1/0431/5794/6530/files/16074455202.pdf
    • https://cdn.shopify.com/s/files/1/0430/8362/8697/files/pokemon_crystal_rare_candy_cheat.pdf
    • https://cdn.shopify.com/s/files/1/0432/8534/8508/files/fisiologia_del_pancreas_endocrino.pdf
    • https://cdn.shopify.com/s/files/1/0435/5581/5583/files/65065215242.pdf
    • https://cdn.shopify.com/s/files/1/0439/5591/2862/files/81557558178.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_off00006c82.bin
2c495e25e1b63f32a70d770b4d36e78ff586432d36854432026a86f15cd4319a
pdf-font-stream PDF embedded font (sfnt) at offset 0x6C82 5644 bytes
font_01_sfnt_off00007f8e.bin
32d00ebfc690331e60b9d6a159f664452c9aa0189205e30893da7054c7c29777
pdf-font-stream PDF embedded font (sfnt) at offset 0x7F8E 10224 bytes
font_02_sfnt_off0000a262.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e
pdf-font-stream PDF embedded font (sfnt) at offset 0xA262 4324 bytes