Malicious PDF — malware analysis report

Static analysis result for SHA-256 3bc2faeb272e564a…

MALICIOUS

PDF

39.4 KB Created: 2020-08-30 05:40:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 63637ccbfa3f43203c6d90f0b9305c65 SHA-1: 635b084ab6ac82c410e266154991eea8329a8cbc SHA-256: 3bc2faeb272e564a08e51842d2711bac2bfe067eb92e02c3ca928b1db164ddb2
120 Risk Score

Malware Insights

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

The PDF document was identified as malicious due to its inclusion of a link farm pointing to known malicious redirector infrastructure. The primary malicious URL is ttraff.ru, which is used to redirect users to potentially harmful content. The document also contains numerous links to static.usrfiles.com, which appear to be part of a link farm strategy. No scripts were extracted, and the document body was heavily obfuscated, making it difficult to determine the exact lure.

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.ru/wix?keyword=los+girasoles+ciegos+pelicula+comple
    • https://static.usrfiles.com/ugd/4e6dd5_bfec574655774252976fbd1115ee267a.pdf
    • https://static.usrfiles.com/ugd/b8c837_fceb8642e2314bf49b72c69d942b1f56.pdf
    • https://static.usrfiles.com/ugd/d99ef3_294c547fea5a4c1f9c119d879793a571.pdf
    • https://static.usrfiles.com/ugd/b8c837_7c7dd89e9dab43968eb089672b0031c8.pdf
    • https://static.usrfiles.com/ugd/822ecd_1f281138b38948fab1f514c2a5f2ffcd.pdf
    • https://static.usrfiles.com/ugd/913720_9a9e665f7c234c5191048790d1ddc999.pdf
    • https://static.usrfiles.com/ugd/b8c837_e3f7833f909d4a9980ee32a7e19b1bbb.pdf
    • https://static.usrfiles.com/ugd/b8c837_a58ddef50f6f44dfb7e6aae06013f5b3.pdf
    • https://cdn.shopify.com/s/files/1/0430/7589/5447/files/40564083872.pdf
    • https://cdn.shopify.com/s/files/1/0437/6382/6849/files/convert_scanned_to_word_adobe_pro.pdf
    • https://cdn.shopify.com/s/files/1/0431/6138/7170/files/26296571902.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_off00005a1f.bin
716e95c7c1463a26c815b4fd72d772256c05d7b1f870251bcc12f48650ad59b9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A1F 5196 bytes
font_01_sfnt_off00006bb6.bin
b842a26856c05e1c72015ca8be14b9000ae711a8c46fc6961440a2b0d68de6aa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BB6 10920 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.