Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad10603d0efe57e1…

MALICIOUS

PDF

37.2 KB Created: 2020-09-01 01:13:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 81fab9673fca45e6aff67506903ac087 SHA-1: 66a60b6dbca868f06dcd8cd309464265b5dacc4d SHA-256: ad10603d0efe57e1a033faeed9f4e0bd6d2e2fe8222849cf68e27351cbb7f951
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a malicious redirector link disguised as a software update lure. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK indicates that the embedded URL, https://ttraff.cc/wix?keyword=xbox+360+backwards+compatibility+update++usb, leads to known malicious infrastructure. Additionally, the PDF_SEO_LINK_FARM heuristic indicates a large number of outbound links, many pointing to static.usrfiles.com, suggesting a link farm used for SEO poisoning or traffic redirection. The SE_DOWNLOAD_BUTTON heuristic further supports the lure-based attack pattern.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=xbox+360+backwards+compatibility+update++usb
    • https://static.usrfiles.com/ugd/c7a620_dcc82aa94ce14aa480dd6c432e2d47f9.pdf
    • https://static.usrfiles.com/ugd/b8c837_c4cda6bd2d794ff4a1f776d213aa55d9.pdf
    • https://static.usrfiles.com/ugd/b8c837_7d3cd954f1da4bada83340c99be8475f.pdf
    • https://static.usrfiles.com/ugd/b8c837_92b238685ffe4f349a7145b17cc66dab.pdf
    • https://static.usrfiles.com/ugd/b8c837_bbbc9069f4504539a1cd1c700e0e4d66.pdf
    • https://static.usrfiles.com/ugd/405339_ae5faddb5f3d45b2b3ba6260b4c24377.pdf
    • https://static.usrfiles.com/ugd/87fdc7_2ff53d7bf3734b84b243701f48819145.pdf
    • https://static.usrfiles.com/ugd/7f16bd_d0db4eddde9f4b679be9db747cee35a3.pdf
    • https://cdn.shopify.com/s/files/1/0431/0273/2448/files/administracion_de_empresas_turisticas_libro.pdf
    • https://cdn.shopify.com/s/files/1/0430/6790/0058/files/pathophysiology_of_huntington_s_disease.pdf
    • https://cdn.shopify.com/s/files/1/0439/1292/1256/files/zepilunisatet.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_off00005032.bin
7eb060bb8de25bb65af81ca61e9705904bb18963f38e606277523fe405d8aca6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5032 6124 bytes
font_01_sfnt_off00006503.bin
ca615208bc35920c249e69c723acf2454f3149473f0d0cc14680618e03d8556b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6503 10156 bytes

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