Malicious PDF — malware analysis report

Static analysis result for SHA-256 97de0080d96fd35f…

MALICIOUS

PDF

69.5 KB Created: 2020-08-31 01:17:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6675deb2b9ae6b8fedfa112642797069 SHA-1: e3bd6e19184a8fea8a1524485b56d968c2b1c24b SHA-256: 97de0080d96fd35f5e892c14703594b29969e955b8db9df0c4e05b7eacfc23b6
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/wix?keyword=manual+jcb+540-170'. This URL is presented within the document body, disguised as a manual for industrial equipment, to entice users to click. The file also exhibits characteristics of a PDF link farm, with numerous embedded links, many pointing to the 'static.usrfiles.com' domain, which likely serves as a staging ground for further malicious content.

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=manual+jcb+540-170
    • https://static.usrfiles.com/ugd/b8c837_109163e0a77c40919393e58b29782ac3.pdf
    • https://static.usrfiles.com/ugd/05900a_9d3d02af9598417b8c26f4f6870048ad.pdf
    • https://static.usrfiles.com/ugd/067ecb_48eaf7f84a0f4863a6b1f19f6256eacc.pdf
    • https://static.usrfiles.com/ugd/4d400c_8bcde3dc1d1f4e1f9ce14d90462281ed.pdf
    • https://static.usrfiles.com/ugd/b8c837_ee3a2dccb7b84b619e066e618a7bd010.pdf
    • https://static.usrfiles.com/ugd/b8c837_fdd3d76c3f8547e69e103a70e265f844.pdf
    • https://static.usrfiles.com/ugd/822ecd_5fe4e2604d33418a96255023aef00487.pdf
    • https://static.usrfiles.com/ugd/b8c837_184b8fb892aa49e5bf07b8003eeaf816.pdf
    • https://static.usrfiles.com/ugd/b8c837_b97a0e3b72dc47ab8d3b8cce4610559d.pdf
    • https://cdn.shopify.com/s/files/1/0429/2093/5590/files/zexexitemafavetige.pdf
    • https://cdn.shopify.com/s/files/1/0427/8072/1311/files/calderas_pirotubulares_y_acuotubulares.pdf
    • https://cdn.shopify.com/s/files/1/0434/0157/6615/files/17067231027.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rasamonuje.pdf
    • https://cdn.shopify.com/s/files/1/0445/6860/8927/files/aberdeen_performing_arts_promo_code.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_off0000d1cf.bin
582e33b2f07b387a624680a73067b175831058171e5d689521aec13e64bd2516		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD1CF 5256 bytes
font_01_sfnt_off0000e3e4.bin
88f9d4fd0cc0391bb446a0aff06b1dd09bd068baf3a42387c7cb500044f8bbb0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE3E4 10668 bytes

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