Malicious PDF — malware analysis report

Static analysis result for SHA-256 f29df8ed3f67cb88…

MALICIOUS

PDF

38.9 KB Created: 2020-08-14 04:16:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b658411552d56db46563e3fb6e891a25 SHA-1: ebaf8f591fc2ef0f7e0e435cd18bb653f5240ebf SHA-256: f29df8ed3f67cb88ba001dd3f9bad8f9452fb468253b67662916643697c82b6b
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, which is also present in the document body. The document also exhibits characteristics of a link farm, with numerous embedded URLs pointing to external PDF files. The primary malicious URL is https://ttraff.cc/wb?keyword=dental%20caries%20articles%20pdf, which likely serves as the initial lure to a malicious payload.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.cc/wb?keyword=dental%20caries%20articles%20pdf
    • http://files.millrdcommunityspace.ca/uploads/1/3/0/7/130775402/jimig.pdf
    • http://senovapet.ruhlandmandolins.com/uploads/1/3/2/7/132740328/vusidujetigagagej.pdf
    • http://sixatej.davinciinitiative.org/uploads/1/3/1/0/131070792/jurefunopugege.pdf
    • http://files.afoxhunting.com/uploads/1/3/1/8/131856212/7577868.pdf
    • https://cdn.shopify.com/s/files/1/0428/6211/7030/files/619389578.pdf
    • https://cdn.shopify.com/s/files/1/0435/2652/0987/files/bitusibozuxuboxavusonu.pdf
    • https://cdn.shopify.com/s/files/1/0429/5055/7855/files/rapix.pdf
    • https://cdn.shopify.com/s/files/1/0432/8439/8236/files/el_aprendiz_brujo_pnl.pdf
    • https://cdn.shopify.com/s/files/1/0434/1648/6040/files/jonuvipikole.pdf
    • https://cdn.shopify.com/s/files/1/0433/8394/7427/files/93888732612.pdf
    • https://cdn.shopify.com/s/files/1/0437/0864/5541/files/23680888495.pdf
    • https://cdn.shopify.com/s/files/1/0433/9105/8076/files/post_office_rd_form.pdf
    • https://cdn.shopify.com/s/files/1/0434/0885/1098/files/78198828025.pdf
    • https://cdn.shopify.com/s/files/1/0429/6504/1311/files/synapse_script_executor.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_off000059c8.bin
7400e47d400b267f431b0da34ae29f3c3de68ac81c584193cc9865d0888cff26		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59C8 5148 bytes
font_01_sfnt_off00006b58.bin
3f1f35922c0f53f4695cb8c5a36192041ca8cae6a8037b2765d14348137cd50c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B58 9976 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.