Malicious PDF — malware analysis report

Static analysis result for SHA-256 b96e35c0003e0650…

MALICIOUS

PDF

50.3 KB Created: 2020-08-31 02:56:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 55971d85706098fb2da26ac47679d639 SHA-1: 785683959153bfd769580a010cc66e696f43e19b SHA-256: b96e35c0003e0650b8ddbabf593cca8f7f48fd1b4a78eec758f8e14fa92963dd
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/wix?keyword=new+orleans+italian+restaurant'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, with 'https://static.usrfiles.com/ugd/4dd980_b7d51996ca4c4b429ab426ec828e45a3.pdf' being the first identified. The document body, though heavily obfuscated, contains references to these URLs, suggesting an attempt to direct users to malicious infrastructure under the guise of providing information.

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.cc/wix?keyword=new+orleans+italian+restaurant
    • https://static.usrfiles.com/ugd/4dd980_b7d51996ca4c4b429ab426ec828e45a3.pdf
    • https://static.usrfiles.com/ugd/e5a943_be55c282ad91468a9e9731ccf2dbdf08.pdf
    • https://static.usrfiles.com/ugd/b8c837_6fab0fb2f8284ee8a177317f2dddbf43.pdf
    • https://static.usrfiles.com/ugd/cb5dea_a753082923214473a6f168122e862216.pdf
    • https://static.usrfiles.com/ugd/724fb5_b88d1863a2ae468a84c66b55d343d282.pdf
    • https://static.usrfiles.com/ugd/9b7d8a_485223cc52af4048b762ac2b92ae911d.pdf
    • https://static.usrfiles.com/ugd/8ab72e_70d188d5b9e04e879eb5ef775775a6b8.pdf
    • https://cdn.shopify.com/s/files/1/0438/2267/8173/files/university_physics_with_modern_physics_14th_edition_by_young_and_freedman_with_mastering_physics.pdf
    • https://cdn.shopify.com/s/files/1/0432/3350/9534/files/how_to_move_discord_overlay.pdf
    • https://cdn.shopify.com/s/files/1/0431/3314/1149/files/bojufuxidelukesakanidez.pdf
    • https://cdn.shopify.com/s/files/1/0432/3436/1503/files/sofugolemuxutiloni.pdf
    • https://cdn.shopify.com/s/files/1/0440/2823/1830/files/nomenclatura_de_los_materiales_metalicos.pdf
    • https://cdn.shopify.com/s/files/1/0432/7319/1580/files/16168169607.pdf
    • https://cdn.shopify.com/s/files/1/0430/1740/4573/files/technological_innovation_in_immunology.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_off000088b1.bin
d132a25256a1689545ad9462697d8d676cb8a4b9b7387912a7068d6a92857f09		 pdf-font-stream PDF embedded font (sfnt) at offset 0x88B1 4740 bytes
font_01_sfnt_off000098ec.bin
8bdfce3c8bb7bc45acfe94a5a40ed47f9c6b57ba9d1ca5c12305a42026a24106		 pdf-font-stream PDF embedded font (sfnt) at offset 0x98EC 10448 bytes

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