Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c8e75ce44034fab…

MALICIOUS

PDF

50.5 KB Created: 2020-08-30 14:20:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1834612945a536faeb56258f39bbc8a5 SHA-1: d4e7e352837f9898809445334d431b02b38dcf10 SHA-256: 4c8e75ce44034fab07ffe6c79127bd1f68540917a2b6db69f0177e85d87b4fd8
160 Risk Score

Malware Insights

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

The PDF contains a heuristic match for an advance-fee scam lure, combined with a critical finding of a malicious redirector link. The embedded URL 'https://ttraff.com/wix?keyword=market+forex+signals' is the primary indicator of malicious intent, likely leading to further compromise. The document also hosts a large number of external PDF links, many pointing to 'static.usrfiles.com', which is flagged as a link farm.

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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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/wix?keyword=market+forex+signals
    • https://static.usrfiles.com/ugd/b8c837_fa6c7daf8fec4cd58c46d8b9aa7744a8.pdf
    • https://static.usrfiles.com/ugd/5438e3_cfeb8b17270c441f8fca77532704d704.pdf
    • https://static.usrfiles.com/ugd/b8c837_627f96bf1c454a9d8d855841d8b2b7e2.pdf
    • https://static.usrfiles.com/ugd/8d57bd_a04e6c592f3f4cc89194ae935ea561c1.pdf
    • https://static.usrfiles.com/ugd/b8c837_bf4e2112fc7b43eb9c477857facdc4b9.pdf
    • https://static.usrfiles.com/ugd/7ea8bb_b3652a9ef9864a60b717c3250051b483.pdf
    • https://static.usrfiles.com/ugd/0f5b72_27875f21ef304c04866f36d40e24db04.pdf
    • https://static.usrfiles.com/ugd/b8c837_acc9de464a35427b99cb71e95afca048.pdf
    • https://static.usrfiles.com/ugd/b8c837_9b89e0df680240afac0dccc363cee84e.pdf
    • https://static.usrfiles.com/ugd/b8c837_f98fac90fa214322abfe941517a167fb.pdf
    • https://cdn.shopify.com/s/files/1/0427/8845/4559/files/9198526745.pdf
    • https://cdn.shopify.com/s/files/1/0431/6302/5559/files/julozirozom.pdf
    • https://cdn.shopify.com/s/files/1/0433/5845/3918/files/labilinatonugulilosow.pdf
    • https://cdn.shopify.com/s/files/1/0448/0447/2992/files/6482525400.pdf
    • https://static.usrfiles.com/ugd/b8c837_fbbe5d7c3b594555a9671ce984d57710.pdf
    • https://static.usrfiles.com/ugd/98e298_5a8c97cbeef347f39a5ec93aaa57f6f1.pdf
    • https://static.usrfiles.com/ugd/cbe7f7_0df9c7e33db14162aced26c7ad223939.pdf
    • https://static.usrfiles.com/ugd/5899d5_aba1d414f0fa4db496a07ffd49967cd8.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/
    • https://static.usrfiles.com/ugd/8d57bd_a04e6c592f

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008823.bin
bbe0e2747ec158a4e5abb0c2404c405752187c60240d68909eb9ac3bed074f45
pdf-font-stream PDF embedded font (sfnt) at offset 0x8823 5072 bytes
font_01_sfnt_off00009985.bin
1f3304cc0dfad06d149f13a2d42e2e21b8220883efd88ff0dcba01a65afcb3e7
pdf-font-stream PDF embedded font (sfnt) at offset 0x9985 10376 bytes