Malicious PDF — malware analysis report

Static analysis result for SHA-256 8bc2863c104158bc…

MALICIOUS

PDF

33.2 KB Created: 2020-08-30 04:43:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 16c881c952521a20a99e6ce7520e20fe SHA-1: 765ac2a2a0f5876df67a4c10248b609274b6bf89 SHA-256: 8bc2863c104158bcd8c4d0d5e2de618da0a06840e3b530e1f513054ef1f10b0f
128 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link and a large number of external PDF links, suggesting a link farm for SEO poisoning. The presence of a 'Download' button lure further supports the malicious intent. The primary malicious URL identified is ttraff.ru, which redirects to a search query that includes 'download maleek berry eko miami'. The document body contains garbled text but also includes the malicious URL and several benign Shopify URLs.

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.ru/wix?keyword=download+maleek+berry+eko+miami
    • https://cdn.shopify.com/s/files/1/0429/3695/9139/files/vozalibo.pdf
    • https://cdn.shopify.com/s/files/1/0437/0278/0057/files/itasca_state_park_cabins.pdf
    • https://cdn.shopify.com/s/files/1/0428/2250/0518/files/17851480567.pdf
    • https://cdn.shopify.com/s/files/1/0438/2218/6656/files/advance_auto_parts_application.pdf
    • https://static.usrfiles.com/ugd/b8c837_d1edcb8a83c94dfea2c829b95e17ac54.pdf
    • https://static.usrfiles.com/ugd/e3ed1f_1f746995658b49b5be6b5142ed1685a5.pdf
    • https://static.usrfiles.com/ugd/b8c837_5ac9f9b88e3c48abafbd446574e31abb.pdf
    • https://static.usrfiles.com/ugd/b8c837_54747d7996d7449ebdc7dc3d22e5f778.pdf
    • https://static.usrfiles.com/ugd/3ceeb9_301c07b1e5bc45468acbb2ca59018b7f.pdf
    • https://static.usrfiles.com/ugd/b8c837_042007822ad24e519d279f0d3604b673.pdf
    • https://cdn.shopify.com/s/files/1/0434/8493/8390/files/51346127932.pdf
    • https://cdn.shopify.com/s/files/1/0434/7019/2802/files/70849781718.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_off00004497.bin
ba5c1aa502f72338bee13a74c0954fb433576e09cef31634464821188072ab0d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4497 5188 bytes
font_01_sfnt_off0000563c.bin
070d6cb000aa281db2d84a5184972e8bdcf6cfc3ef3e6fe406d2bd4004d5c5e0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x563C 9964 bytes

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