Malicious PDF — malware analysis report

Static analysis result for SHA-256 b19a0856d6c21bad…

MALICIOUS

PDF

36.9 KB Created: 2020-08-30 13:49:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6738e28bb0bd473660b46b680ef47fab SHA-1: d9677475ab2057b6fd617f0fc7c83ee612df3b32 SHA-256: b19a0856d6c21bad21386057b8e09fa42d5268dff99fd4c70470fdace73ff4eb
120 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to the presence of a large number of external links, a technique often used for SEO manipulation or to redirect users to malicious content. One critical heuristic firing specifically noted a PDF link to known malicious redirector infrastructure. The document body contains a URL that appears to be part of this redirection scheme.

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.link/wix?keyword=hollywood+video+sange
    • https://static.usrfiles.com/ugd/7041e4_029501a9f93c469ba426671325f4cdd2.pdf
    • https://static.usrfiles.com/ugd/71fd01_b6f24dcb4ae54f63b0c075d3ead1d552.pdf
    • https://static.usrfiles.com/ugd/b8c837_7defd885b47d499c902e3ab214b45bd3.pdf
    • https://static.usrfiles.com/ugd/b8c837_58698c06fa6840518f5369d122e9ed50.pdf
    • https://static.usrfiles.com/ugd/b8c837_a38d6fa4cb47484080ed3b800154c22e.pdf
    • https://static.usrfiles.com/ugd/b8c837_1225a9ef6b364cad995240a823b438a5.pdf
    • https://static.usrfiles.com/ugd/b8c837_350ed67898fa49bc8ca490459bc7a8c9.pdf
    • https://static.usrfiles.com/ugd/b8c837_645c089ac308464b8c1b746283966581.pdf
    • https://cdn.shopify.com/s/files/1/0433/4757/4949/files/rupinder_gandhi_original_photos.pdf
    • https://cdn.shopify.com/s/files/1/0431/3792/5269/files/92479351940.pdf
    • https://cdn.shopify.com/s/files/1/0431/3029/0327/files/ronanebotumotukufo.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_off00005392.bin
89a6cc7b92adbb9268749d7e955c2895ec0ab9092f293ec3d40ead5008c74708		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5392 5112 bytes
font_01_sfnt_off00006529.bin
e6242b5a8479cdc9dd621f9bc3fb71ac5ee45e88570a365b5e0fcfd7ac42ad7d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6529 10004 bytes

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