Malicious PDF — malware analysis report

Static analysis result for SHA-256 c53df775ff38b06c…

MALICIOUS

PDF

45.2 KB Created: 2020-09-10 18:39:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 638c3cb79124bf7ffb757ec1ea4c0b38 SHA-1: d4fc26bf80de7b6d8d1317e02f9a15536cb5cbc8 SHA-256: c53df775ff38b06ccdcc7bc89e6479281c296d28b5e6dafb385f6b86d3161915
160 Risk Score

Malware Insights

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

The PDF file contains a lure related to an 'application form for us visa in barbados' and embeds multiple external links. One of these links, 'https://ttraff.club/wix?keyword=application+form+for+us+visa+in+barbados', is identified as a malicious redirector. The document structure and content strongly suggest an advance-fee scam, aiming to trick users into clicking the malicious link. No scripts were extracted, but the presence of the malicious redirector and the scam lure are sufficient indicators.

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.club/wix?keyword=application+form+for+us+visa+in+barbados
    • https://static.usrfiles.com/ugd/95089d_112b60c8ce3b4beea9efffa98007642d.pdf
    • https://static.usrfiles.com/ugd/aff7ca_5f31cb6d2c4d42e3929f3edcb241df8d.pdf
    • https://static.usrfiles.com/ugd/3cb679_7c04e8afc47c4da28f93430d3c83ba5b.pdf
    • https://static.usrfiles.com/ugd/67e251_f127b6b13c8d4d8cb1a61c6f89cdd24c.pdf
    • https://cdn.shopify.com/s/files/1/0432/2390/8520/files/65438375730.pdf
    • https://static.usrfiles.com/ugd/0c8cc8_11563c432606451f8b9a30b0521b9e74.pdf
    • https://static.usrfiles.com/ugd/3402b1_379b9d9a8ec549518b39236d0d09de4e.pdf
    • https://static.usrfiles.com/ugd/4b68be_65badd4f332f458d811af58dc0531a23.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gejazopemovaro.pdf
    • https://cdn.shopify.com/s/files/1/0435/1708/3803/files/lekuxufu.pdf
    • https://cdn.shopify.com/s/files/1/0432/8760/9497/files/data_analysis_techniques_in_qualitative_research.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_off0000727e.bin
658c6304e43738123be5d167328dc24740e629ea08145a4ceda2df0c54d67446		 pdf-font-stream PDF embedded font (sfnt) at offset 0x727E 5488 bytes
font_01_sfnt_off00008519.bin
4f728fa876d7abc26c94ac9406ede5167ac8e38f3d1a9e7b6cd6917605f056fb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8519 10212 bytes

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