Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c0bf4c57549b4aa…

MALICIOUS

PDF

39.2 KB Created: 2020-08-29 21:38:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 570d21190996d482d474182dc4c61d44 SHA-1: 07d19ae793f2e4d7cde38909b4301172953d2582 SHA-256: 7c0bf4c57549b4aa1940bf0d7936e21b993aa8feab3fcb066c4bb904a9bb11ee
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, which points to 'https://ttraff.club/wix?keyword=cuadro+sinoptico+de+la+independencia'. This URL is likely used to redirect the user to a malicious site. The document also contains a large number of embedded links, many of which point to Shopify and static.usrfiles.com, suggesting a link farm or SEO poisoning attempt to mask the malicious redirector. 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.club/wix?keyword=cuadro+sinoptico+de+la+independencia
    • https://cdn.shopify.com/s/files/1/0431/9775/9643/files/xelekajivinujanu.pdf
    • https://cdn.shopify.com/s/files/1/0440/8573/9685/files/archicad_21_keyboard_shortcuts.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/70474217151.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/47878122177.pdf
    • https://cdn.shopify.com/s/files/1/0428/8829/8659/files/jikukanagajezuwirodenapa.pdf
    • https://static.usrfiles.com/ugd/b8c837_ccbb1ebdcb92465c8c27d17a6d91a253.pdf
    • https://static.usrfiles.com/ugd/b11f6d_203dd0465cbb4e569ef96f8e12472702.pdf
    • https://static.usrfiles.com/ugd/07e02c_79efdefd32a14f44981592c78830c48a.pdf
    • https://static.usrfiles.com/ugd/b8c837_32dd69a182684590841fdb8e5e222b40.pdf
    • https://static.usrfiles.com/ugd/b8c837_cc88f8d536d54c9793ab3acb6a5863a3.pdf
    • https://static.usrfiles.com/ugd/e1d12c_d7bb5e79b3fc44cda7a9584b43a8bee4.pdf
    • https://static.usrfiles.com/ugd/b8c837_1681138beec549f89663bdb1f729f914.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_off00005a5f.bin
cf74ae1fe4e046f0682ffae91e566e4105f78f6dc5d45c5bc098688c5c71594e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A5F 4972 bytes
font_01_sfnt_off00006b51.bin
461cb74b26b90f45a20fc94577ab49881b0c43a6edfb4514fba57b812507ef4a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B51 10880 bytes

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