Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec1045d7ec34ac39…

MALICIOUS

PDF

40.3 KB Created: 2020-08-30 06:47:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6ddfa0391859ff32df82a6092b0901aa SHA-1: 20d9d64049afb31567f55510e485434e2db6e39a SHA-256: ec1045d7ec34ac391512e5ecc5d68b7b1014fbe67da657fda06448a84aacfa9a
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Add-in

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/wix?keyword=buen+uso+y+manejo+de+agroquimicos+pdf'. This indicates the document's primary purpose is to redirect users to a potentially harmful site. The presence of a large number of external PDF links also suggests a link farm, a common tactic for SEO poisoning or distributing malicious content. No scripts were extracted from this sample.

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=buen+uso+y+manejo+de+agroquimicos+pdf
    • https://static.usrfiles.com/ugd/cbe7f7_b516b00987184c8ea9f88a763a5acfed.pdf
    • https://static.usrfiles.com/ugd/99a8f2_896a4c4bee8747b2805a221d72756b92.pdf
    • https://static.usrfiles.com/ugd/b8c837_edaa6cb7a74a450c919441e89df33d72.pdf
    • https://static.usrfiles.com/ugd/b8c837_ff5aeca11c9247659be54c6bbfbfa767.pdf
    • https://static.usrfiles.com/ugd/b8c837_765b813be39641e098dfb3974e2d5643.pdf
    • https://static.usrfiles.com/ugd/b8c837_011cb1c16cc1455e9a0c6e68e1e63d31.pdf
    • https://static.usrfiles.com/ugd/362633_98ab51cb9c074817a9409185b561b134.pdf
    • https://static.usrfiles.com/ugd/b8c837_e6d01602948841ca831d1d93a96542a2.pdf
    • https://static.usrfiles.com/ugd/b5aed9_0711c44c7bef469989757ca321342250.pdf
    • https://cdn.shopify.com/s/files/1/0432/8541/4056/files/92785668175.pdf
    • https://cdn.shopify.com/s/files/1/0429/0704/1959/files/37584376201.pdf
    • https://cdn.shopify.com/s/files/1/0429/0589/5075/files/17665673098.pdf
    • https://cdn.shopify.com/s/files/1/0432/8921/5129/files/whatsapp_for_bluestacks_app_player.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_off00005a6b.bin
039f3f99b4c22a38153bbc1fe90f791ae7a6c19e220c22e00cfc2017faf03e32		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A6B 5796 bytes
font_01_sfnt_off00006e1d.bin
91ce73b4e0444a653240a5c7d86c966cf70f05920ddbeedb40f416f7a6f991fa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E1D 11520 bytes

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