Malicious PDF — malware analysis report

Static analysis result for SHA-256 e651b8851aff15d6…

MALICIOUS

PDF

70.1 KB Created: 2020-08-30 08:48:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: adaf371118ec22476ff133c8ead7d2ea SHA-1: b10bd205dfa82a718d630b4fadf039a794ebd99c SHA-256: e651b8851aff15d6fdf964c60595d1d163e7901a61787e412ff69e3d770448af
128 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'https://ttraff.me/wix?keyword=windows+10+enterprise+activator'. This URL is presented in the document body as a lure for a 'Windows 10 enterprise activator'. The PDF also contains a link farm heuristic, indicating it's part of a larger SEO poisoning effort. The document body itself is heavily obfuscated but contains the malicious URL.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=windows+10+enterprise+activator
    • https://static.usrfiles.com/ugd/33c377_411fca51ab1548ae97f9e9cc09ee1d95.pdf
    • https://static.usrfiles.com/ugd/ea5d7b_c178c193993647daa74364f799d5318a.pdf
    • https://static.usrfiles.com/ugd/b8c837_04d372d4222e41629291238f91e34fef.pdf
    • https://static.usrfiles.com/ugd/b8c837_453b49a91bbe4ca78793cb8de7d4e7ab.pdf
    • https://static.usrfiles.com/ugd/b8c837_f3b86c16dfe740c0a94601885d5d65a7.pdf
    • https://static.usrfiles.com/ugd/b8c837_818d88e52bfa45b58500c718b8a2ea5b.pdf
    • https://static.usrfiles.com/ugd/fbccce_811b9b18d3384dc7b297ffddd24ca075.pdf
    • https://static.usrfiles.com/ugd/b8c837_e97f7c3d3ba34ff09a3bffde9f8bd792.pdf
    • https://cdn.shopify.com/s/files/1/0430/6377/1293/files/6028450386.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fapodepemiretewuroraga.pdf
    • https://cdn.shopify.com/s/files/1/0431/5385/0528/files/memugivavidasuvixufow.pdf
    • https://cdn.shopify.com/s/files/1/0430/7746/8311/files/blindspot_hidden_biases.pdf
    • https://cdn.shopify.com/s/files/1/0434/6049/3474/files/13211884576.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_off0000d36f.bin
e9eedc5fa1ffb8f5d78fac6d22d2b42114b9cb8134635dda6684dca2f664cf82		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD36F 5396 bytes
font_01_sfnt_off0000e5f1.bin
80361ffe1d7323995cae82bf3c26b05d0e287ce20febde7d71fa45d639653f67		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE5F1 11004 bytes

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