Malicious PDF — malware analysis report

Static analysis result for SHA-256 c10163199b968679…

MALICIOUS

PDF

41.1 KB Created: 2020-08-31 14:47:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7c2a441bbcab787257b0d0b97ed3b357 SHA-1: 9c914c3c777579e48b50913ac72d8a2601a57c4d SHA-256: c10163199b968679d37ae3dca7f2f89e34f8618654b1ea70b2a4f4fb68c3e630
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing indicating it links to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text referencing a movie title and a URL that aligns with the malicious redirector. The file also exhibits characteristics of a link farm, with numerous embedded URLs pointing to external PDF files, likely to obscure the malicious destination.

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/pify?keyword=aagadu+tamil+dubbed+movie++in+tamilrockers
    • https://cdn.shopify.com/s/files/1/0463/1547/1013/files/spiral_bevel_gear_design_calculation.pdf
    • https://cdn.shopify.com/s/files/1/0462/4180/8535/files/105_degrees_to_radians.pdf
    • https://cdn.shopify.com/s/files/1/0430/7786/1527/files/instagram_for_mac_pro.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kiwovanigefuminif.pdf
    • https://static.usrfiles.com/ugd/599f1c_e7f743b16f934f56bd476c1ecc4342b4.pdf
    • https://static.usrfiles.com/ugd/b8c837_9861b9e5a22748e091115c8e140b1ca8.pdf
    • https://static.usrfiles.com/ugd/b8c837_f78d46a3fb8e4ce5b1b3cedb913d67d8.pdf
    • https://static.usrfiles.com/ugd/c1de29_bcc5e2279c0b4560be4949b4740c77fd.pdf
    • https://static.usrfiles.com/ugd/b8c837_4c3926fca7d74a2a99aa658980a2377a.pdf
    • https://cdn.shopify.com/s/files/1/0434/1799/3366/files/mibedewagizipi.pdf
    • https://cdn.shopify.com/s/files/1/0440/8341/3142/files/bls_2020_espaol_descargar.pdf
    • https://cdn.shopify.com/s/files/1/0430/3876/9303/files/fodap.pdf
    • https://cdn.shopify.com/s/files/1/0434/6665/3858/files/33994340349.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004c37.bin
dd1073b03eaaeccf2bf391f8eeec1e6b5782339389e969cdbf3dc0ab6fc002f4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4C37 5512 bytes
font_01_sfnt_off00005eea.bin
01135ae6dd27d4c28d32c01bcf428689d2441d36df62c4e02fbaf8e002d2313f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5EEA 10204 bytes
font_02_sfnt_off00008214.bin
6e3fbd491d8b71441998836ddca0d0c102716a221ea14f8143929167ad9a79b3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8214 16164 bytes

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