Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce7154f7356af62a…

MALICIOUS

PDF

54.0 KB Created: 2020-09-12 01:06:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 430444a95d39081bc1214bd032672da6 SHA-1: 5bcbe668e88da00ef391f94a1dd6fd249742d1a4 SHA-256: ce7154f7356af62a2668048163bc4897efb0e3ba0a8f7be190a918901fddbc64
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, directing users to 'https://ttraff.club/wix?keyword=about+us+page+design+in+html'. Additionally, it exhibits a PDF link farm heuristic, embedding numerous links, with the first being 'https://cdn.shopify.com/s/files/1/0429/7333/1609/files/hollywood_movies_2019_tamil_dubbed_hd.pdf'. The document body, though partially corrupted, contains text related to 'About us page design in html' and mentions wkhtmltopdf, suggesting a lure to disguise the malicious intent. No scripts were extracted from this sample.

Heuristics 3

  • 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.
  • 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=about+us+page+design+in+html
    • https://cdn.shopify.com/s/files/1/0429/7333/1609/files/hollywood_movies_2019_tamil_dubbed_hd.pdf
    • https://cdn.shopify.com/s/files/1/0429/5216/3482/files/20463820589.pdf
    • https://cdn.shopify.com/s/files/1/0437/1241/3851/files/atmospheres_peter_zumthor.pdf
    • https://cdn.shopify.com/s/files/1/0439/2442/2811/files/37195543097.pdf
    • https://cdn.shopify.com/s/files/1/0429/9456/5271/files/malivesesal.pdf
    • https://cdn.shopify.com/s/files/1/0433/5091/7269/files/23284239839.pdf
    • https://cdn.shopify.com/s/files/1/0441/3099/2280/files/the_ultimate_javascript_manual_2020.pdf
    • https://cdn.shopify.com/s/files/1/0466/2827/4341/files/sony_bravia_tv_remote_app.pdf
    • https://cdn.shopify.com/s/files/1/0441/0313/9480/files/61817270598.pdf
    • https://cdn.shopify.com/s/files/1/0434/6052/6246/files/51104392847.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/65587220918.pdf
    • https://static.usrfiles.com/ugd/6166c9_9ea7df3ada494bccaab1283d069447aa.pdf
    • https://static.usrfiles.com/ugd/6908d7_e83f80ceb7204e80be72b23e2b5ea031.pdf
    • https://static.usrfiles.com/ugd/37428b_56247502ba0f4a73aa920cb432eff608.pdf
    • https://static.usrfiles.com/ugd/a7074a_26e13456a92e460db9d1f8daf56ba93b.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_off0000930b.bin
1cb43c1c488233e25421ee81050cf51b655a3317dc91c4e9b2f9d7dc1b26f245		 pdf-font-stream PDF embedded font (sfnt) at offset 0x930B 5404 bytes
font_01_sfnt_off0000a541.bin
2ce4adfb3bfc1d4985b9947a3caf52eb3d8758c498d2fa9be8393e15fa6c8167		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA541 11348 bytes

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