Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1a249a1820b3516…

MALICIOUS

PDF

44.1 KB Created: 2020-08-31 14:25:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 612ab86a263bd7a8c02cb75abf9b5300 SHA-1: 2a888f7efe954634f6cd9fe0d23c5a8e3c556cab SHA-256: b1a249a1820b351646cf29c49f42112446cc08b56b15fd3d11f86f2bfef7789d
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, with a critical heuristic identifying one as a known malicious redirector. The document body, though heavily obfuscated, contains the same malicious URL. This suggests the primary purpose is to lure the user to a malicious site, likely for phishing or malware delivery. No scripts were extracted, limiting further analysis of the payload.

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.com/wix?keyword=associer+des+documents+pdf
    • https://cdn.shopify.com/s/files/1/0441/3777/5256/files/57767367878.pdf
    • https://cdn.shopify.com/s/files/1/0429/4751/0435/files/game_captain_tsubasa_pcsx2.pdf
    • https://cdn.shopify.com/s/files/1/0429/9004/3287/files/riburebuvagaja.pdf
    • https://cdn.shopify.com/s/files/1/0429/8535/7463/files/14870094729.pdf
    • https://cdn.shopify.com/s/files/1/0434/8978/8069/files/94254008021.pdf
    • https://cdn.shopify.com/s/files/1/0438/8772/2648/files/mojixud.pdf
    • https://cdn.shopify.com/s/files/1/0463/7566/5825/files/solonilobibi.pdf
    • https://cdn.shopify.com/s/files/1/0433/6936/5654/files/tijomatunufavaf.pdf
    • https://cdn.shopify.com/s/files/1/0440/4012/6629/files/report_hierarchical_linear_regression_apa.pdf
    • https://cdn.shopify.com/s/files/1/0434/8638/0189/files/36220138413.pdf
    • https://static.usrfiles.com/ugd/b8c837_928da8534db641c1a63a7a9cb8334c3c.pdf
    • https://static.usrfiles.com/ugd/b8c837_7a34f25398c34df9b1a99cc4e235aec6.pdf
    • https://static.usrfiles.com/ugd/cf14a4_c369ec65e4b540eca5b4e1ac9af1e77e.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_off00006e15.bin
14f1af39e43967a2b9ac2cce84971463df7868894d82011b7dd85866803bb128		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E15 5048 bytes
font_01_sfnt_off00007f2e.bin
5e39b0b66788bf4fe411f03c14e7a8f1cb83da6bd85c4c72e04a8ee1e4111a72		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F2E 11668 bytes

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