Malicious PDF — malware analysis report

Static analysis result for SHA-256 770be7b00fecc35a…

MALICIOUS

PDF

117.9 KB Created: 2020-08-30 16:00:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1922577536659ed06d16b8f4cef9716e SHA-1: bc6b79f83f4df9b8caca2dfe6d0fbe21e567fe19 SHA-256: 770be7b00fecc35ae06beaad15512bde8f676503b2d0d088743ec037b0a20892
168 Risk Score

Malware Insights

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

The PDF file contains a lure related to financial documents, specifically mentioning 'trading profit and loss account and balance sheet in excel format download'. It embeds a link to a known malicious redirector, ttraff.cc, which is designed to lead users to malicious content. The document also contains a large number of external PDF links, many pointing to static.usrfiles.com, suggesting a link farm or SEO poisoning tactic to increase visibility of the malicious content.

Heuristics 5

  • 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.
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise 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.cc/wix?keyword=trading+profit+and+loss+account+and+balance+sheet+in+excel+format+download
    • https://static.usrfiles.com/ugd/b8c837_c339c8983be644e3b4c99bf180b96e90.pdf
    • https://static.usrfiles.com/ugd/b8c837_e10ee5f6e76d49589f79dae644af953f.pdf
    • https://static.usrfiles.com/ugd/b8c837_e14af3858e1a4c8395955d88307a7e7a.pdf
    • https://static.usrfiles.com/ugd/0c268c_ea3abf69f28447bcbd3141d18b3d5cbe.pdf
    • https://static.usrfiles.com/ugd/856cea_79fbed8e88f841b5b2e4e9c0d2893b1e.pdf
    • https://static.usrfiles.com/ugd/c0b427_604bb6bab67c4430b8f81150fb5aa2d7.pdf
    • https://static.usrfiles.com/ugd/cfa91a_9c0116c22bac44eaac1e4a11062a3c9f.pdf
    • https://static.usrfiles.com/ugd/c8a981_cac0b4aa7b714931ba34db348e30cb27.pdf
    • https://static.usrfiles.com/ugd/429b25_f505a818416f4c1896ec562b642f8d26.pdf
    • https://static.usrfiles.com/ugd/80c1db_559cca73dbc64009a3b9c274f760ed99.pdf
    • https://static.usrfiles.com/ugd/b8c837_c2a34f99e45c4631a1cac9d382272220.pdf
    • https://static.usrfiles.com/ugd/271e65_453f451ebe9d416984e59a2a8192462a.pdf
    • https://static.usrfiles.com/ugd/ce14f3_abaaf92dad084aedaa7767e2cc2e4d48.pdf
    • https://static.usrfiles.com/ugd/ee6770_44b128acdc9649bea9aaea96d6785859.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_off00019071.bin
101c30bee81a96d90ff52b62943a89940a39916cd2d8f27c5da3683e1d794799
pdf-font-stream PDF embedded font (sfnt) at offset 0x19071 5820 bytes
font_01_sfnt_off0001a416.bin
5d4dd526560abe5c235b775e66ca4c9a807ab97d9b3550fe1a9aa56335cd2d4a
pdf-font-stream PDF embedded font (sfnt) at offset 0x1A416 11088 bytes