Malicious PDF — malware analysis report

Static analysis result for SHA-256 b204192d880f9704…

MALICIOUS

PDF

64.8 KB Created: 2020-08-30 13:15:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8bb6c9e1fab29c89bfabb7d95abaa2b9 SHA-1: 949470238b2f8c0c90d0fbcabda85d9228951e0d SHA-256: b204192d880f9704a4f802a24f8e3cadf2d88d527d35998044da7ce2f523cead
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, with one identified as a malicious redirector. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' indicates a direct link to potentially harmful infrastructure. Additionally, 'PDF_SEO_LINK_FARM' suggests the document is part of a scheme to artificially inflate search engine rankings or distribute spam content. The primary IOC is the malicious redirector URL, which is likely the initial step in a multi-stage attack.

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/wix?keyword=5e+sorcerer+vs+wizard
    • https://static.usrfiles.com/ugd/b8c837_2f39915c136e4678a61ff3558f66f450.pdf
    • https://static.usrfiles.com/ugd/735189_d636be937b484be6ab5772252bf20098.pdf
    • https://static.usrfiles.com/ugd/724bd4_11a26d12b6f34038a8367000fc408f36.pdf
    • https://static.usrfiles.com/ugd/ed64d2_be45df7442d24f11a840c8a1655133c2.pdf
    • https://static.usrfiles.com/ugd/9e53d4_0befb644251c4b38a1afc7138855321e.pdf
    • https://static.usrfiles.com/ugd/b8c837_9d6ac805ccef4705aeed88c6bf67e36f.pdf
    • https://static.usrfiles.com/ugd/badafb_b5b038442b2e4ddfb888fedcd5999e86.pdf
    • https://static.usrfiles.com/ugd/913720_d1490a6911334e6395ef8fee88ffd4c8.pdf
    • https://cdn.shopify.com/s/files/1/0461/9124/7511/files/free_doctor_tushy_video.pdf
    • https://cdn.shopify.com/s/files/1/0429/0645/2127/files/69229232498.pdf
    • https://cdn.shopify.com/s/files/1/0439/2088/3880/files/19779433321.pdf
    • https://cdn.shopify.com/s/files/1/0434/3683/4981/files/22078019143.pdf
    • https://cdn.shopify.com/s/files/1/0437/7437/8138/files/84529098431.pdf
    • https://cdn.shopify.com/s/files/1/0433/9934/8389/files/colored_pencil_artist_s_drawing_bible.pdf
    • https://cdn.shopify.com/s/files/1/0430/3529/5905/files/17079150078.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/
    • https://static.usrfiles.com/ugd/724bd4_11a26d12b6f3403

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b392.bin
96bcff02017e7653a3c183e7ae4a6ab3271a3c1ea05d65a29892b0f36b6a6998
pdf-font-stream PDF embedded font (sfnt) at offset 0xB392 4736 bytes
font_01_sfnt_off0000c3d0.bin
40204c5a1b129cc0d369514d4587ef72a893c34a896954404d1b3197fa590c90
pdf-font-stream PDF embedded font (sfnt) at offset 0xC3D0 10648 bytes
font_02_sfnt_off0000e824.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e
pdf-font-stream PDF embedded font (sfnt) at offset 0xE824 4324 bytes