Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3eb6a81ac3987a5…

MALICIOUS

PDF

50.5 KB Created: 2020-09-07 16:15:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f6c8f70850e8b5bc01785775c4834c2a SHA-1: aa1a837a6419caccd4e73ecea6332d423ab07b2b SHA-256: d3eb6a81ac3987a5c5325ac689d56c48884a5b317078dd9f86dae8df319afb82
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'ttraff.me'. The document body, though heavily obfuscated, contains text related to vehicle registration and includes the same malicious URL. This suggests a lure to trick the user into clicking the link, likely leading to a phishing or malware download site. The presence of a PDF link farm heuristic further supports the malicious intent of distributing links.

Heuristics 4

  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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.me/wix?keyword=cerere+inmatriculare+auto+2019+pdf+brasov
    • https://cdn.shopify.com/s/files/1/0434/6534/3141/files/72666500364.pdf
    • https://cdn.shopify.com/s/files/1/0437/7142/9016/files/84203932878.pdf
    • https://cdn.shopify.com/s/files/1/0463/3732/7261/files/xiganes.pdf
    • https://cdn.shopify.com/s/files/1/0439/4621/3544/files/bangla_to_english_dictionary_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/0395/2803/files/wesunagebugufakekosub.pdf
    • https://static.usrfiles.com/ugd/d43733_8c08ee197e9d40e085576e89e049ce63.pdf
    • https://static.usrfiles.com/ugd/0c268c_e32032c600334ecca88fcdde94bd9b32.pdf
    • https://static.usrfiles.com/ugd/edb4a7_73337e7d6bd44a0598245a40a05e43e6.pdf
    • https://static.usrfiles.com/ugd/39d081_354c0c65ac1b47129bde7848a41d0f53.pdf
    • https://static.usrfiles.com/ugd/2ca22b_1f5c60da4e4748808e481cdb915857b4.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000873b.bin
ce16fbcff424d68482ecb2e466cb56683635f0b571c94fdc89868847b08bd3ba		 pdf-font-stream PDF embedded font (sfnt) at offset 0x873B 5888 bytes
font_01_sfnt_off00009b28.bin
7b3365cd1fbc69b629b4f0dad262e1a09c0044cb612d7d8218dd52c4d915accd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9B28 9956 bytes

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