Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd577e0cb5228d6b…

MALICIOUS

PDF

49.3 KB Created: 2020-08-31 14:04:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4a2ebffc0c42c7cc4610de40e155c9e5 SHA-1: 822761631e9e07144f49837897924ee6b1dca3b9 SHA-256: bd577e0cb5228d6b132fcf19aa01c01dcf96f137b28377c8496ebadf81226b52
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one critical heuristic identifying a malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/wix?keyword=hoarding+rating+scale+pdf', which is flagged as malicious. The presence of numerous external links, many pointing to Shopify, suggests a link farm or SEO poisoning tactic to distribute malicious content. No scripts were extracted, limiting the analysis of direct execution capabilities.

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=hoarding+rating+scale+pdf
    • https://cdn.shopify.com/s/files/1/0435/0109/3030/files/97677994431.pdf
    • https://cdn.shopify.com/s/files/1/0463/2766/0706/files/rozurutelezuzazogomilo.pdf
    • https://cdn.shopify.com/s/files/1/0436/9681/6282/files/cost_of_asbestos_roofing_sheet_in_nigeria.pdf
    • https://cdn.shopify.com/s/files/1/0433/1392/2206/files/bofenexodabetorem.pdf
    • https://cdn.shopify.com/s/files/1/0434/5711/8374/files/36466157928.pdf
    • https://cdn.shopify.com/s/files/1/0432/2862/7107/files/26080180752.pdf
    • https://cdn.shopify.com/s/files/1/0431/5385/0528/files/king_arthur_short_story.pdf
    • https://static.usrfiles.com/ugd/857e61_78f56eb94f5d4bfea709b4b8e245b28e.pdf
    • https://static.usrfiles.com/ugd/12f4eb_2d2a5a894ea64f669ba8fb17d1855422.pdf
    • https://static.usrfiles.com/ugd/b8c837_eb7597026f9b4837ac99584f58d023c1.pdf
    • https://static.usrfiles.com/ugd/b8c837_2fde680701e94438affd19eb660002ba.pdf
    • https://static.usrfiles.com/ugd/b8c837_4820d587703c45f1bae3d88223922d31.pdf
    • https://static.usrfiles.com/ugd/07625c_e09d3d35d8bd41329edfe8b189fd2fcf.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_off00006222.bin
41baeedfdc32d951220f2d71726d27116d8242107fc3903d66ec4531c30a0468		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6222 5284 bytes
font_01_sfnt_off0000742e.bin
d5e222e24fe1af9071d093b56c528c6ad93f38d82602e5dd225dbd3f8f38c229		 pdf-font-stream PDF embedded font (sfnt) at offset 0x742E 15140 bytes
font_02_sfnt_off0000a316.bin
e93acd332f5893643511f4cefd38969ad5c744ad1b08842a788b6be7d277dd15		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA316 16204 bytes

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