Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2ca432dec730bbf…

MALICIOUS

PDF

62.2 KB Created: 2020-08-08 05:33:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 79e76bd69e3e038c100fb0776f302c3d SHA-1: 3e378d2225dd1b65c82b71140da85a6f460d31dc SHA-256: e2ca432dec730bbf174a6b0d9e6b78d7906b3f838851896ee89a91a5d37649c3
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, many of which point to a link farm hosted on Shopify. One of these links, https://ttraff.com/pify?keyword=conversation+casanova+book+pdf, is identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to a book and the wkhtmltopdf tool, suggesting a lure to download or view content. The presence of a malicious redirector indicates an attempt to lead the user to a harmful destination.

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.com/pify?keyword=conversation+casanova+book+pdf
    • http://files.lalarukhgroupofhouseboats.com/uploads/1/3/2/6/132681351/jorapafiseniwugidika.pdf
    • http://ludage.martialfitnesspalmbeach.com/uploads/1/3/0/7/130775934/xaviboxi.pdf
    • http://files.paulavalb.com/uploads/1/3/0/8/130874451/6c58f.pdf
    • https://cdn.shopify.com/s/files/1/0431/1567/5815/files/1957_ford_f100.pdf
    • https://cdn.shopify.com/s/files/1/0427/7505/2454/files/juxotalativasokokug.pdf
    • https://cdn.shopify.com/s/files/1/0431/6912/0413/files/trailer_registration_holder.pdf
    • https://cdn.shopify.com/s/files/1/0431/6368/0929/files/80531127299.pdf
    • https://cdn.shopify.com/s/files/1/0433/8260/3927/files/tic_tac_toe_program_in_c.pdf
    • https://cdn.shopify.com/s/files/1/0429/7854/1722/files/46200959598.pdf
    • https://cdn.shopify.com/s/files/1/0434/1845/2120/files/xufarijipojipanakizawugoj.pdf
    • https://cdn.shopify.com/s/files/1/0437/5671/6183/files/fujizubusobakevapuwapa.pdf
    • https://cdn.shopify.com/s/files/1/0430/3880/2073/files/kisajabawifaligelazabuxad.pdf
    • https://cdn.shopify.com/s/files/1/0434/0118/3384/files/fupudafub.pdf
    • https://cdn.shopify.com/s/files/1/0436/6965/1606/files/gafuxedopilisifa.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/13170590630.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008595.bin
8bdb30ff40f5836e1a4da187bd52b58ff218aff764014d630d655f3f6e4b659e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8595 5192 bytes
font_01_sfnt_off0000973f.bin
e1d6eb4640534e8e0a9fb0092910d95fa43eac4a50742075cfd667ab5c0a2cbc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x973F 3116 bytes
font_02_sfnt_off0000a407.bin
67df153e17f574ea5580f349b1f50ef96bfa93cb9c560d8b36a1d7de6a87fc57		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA407 10628 bytes
font_03_sfnt_off0000c893.bin
35d3440dae1ebc896564e4e6f70ea95aa3a30a1ac603c7fffbb21b68b8b72e2f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC893 16036 bytes
font_04_sfnt_off0000dcfd.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDCFD 4324 bytes

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