Malicious PDF — malware analysis report

Static analysis result for SHA-256 c360052569da494c…

MALICIOUS

PDF

51.8 KB Created: 2020-07-29 13:09:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4c2e706e4ee432896dd5a812f4670a47 SHA-1: 8080c6c1530e23415b587460e866a5a0e5aebb56 SHA-256: c360052569da494ccd1771d5b4df1307024b7b83f968f5c4a7c3658ffd407355
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external resources. One critical heuristic identified a link to a known malicious redirector infrastructure (ttraff.cc), and another identified a mass external PDF link farm. The document body is heavily obfuscated, but the presence of 'Etapas del aprendizaje significativo pdf' suggests a lure related to educational content. The primary attack pattern involves directing users to potentially harmful websites through these embedded links.

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/pify?keyword=etapas+del+aprendizaje+significativo+pdf
    • http://files.cambridgeearlymusic.org/uploads/1/3/0/9/130969061/bokufufuwutuvoba.pdf
    • http://files.magicalmary3.com/uploads/1/3/1/3/131381374/10f70.pdf
    • http://files.islandcitypublishing.com/uploads/1/3/0/7/130776327/monidel.pdf
    • https://cdn.shopify.com/s/files/1/0432/9802/9733/files/89618863332.pdf
    • https://cdn.shopify.com/s/files/1/0428/6346/0508/files/19302024786.pdf
    • https://cdn.shopify.com/s/files/1/0431/7180/7381/files/90399689283.pdf
    • https://cdn.shopify.com/s/files/1/0433/4387/2153/files/donumezijubewijub.pdf
    • https://cdn.shopify.com/s/files/1/0430/8231/7975/files/fuwafor.pdf
    • https://cdn.shopify.com/s/files/1/0432/2040/2337/files/rizivosumu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wojilezufaguxulidumusad.pdf
    • https://cdn.shopify.com/s/files/1/0430/8510/3255/files/79271373578.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bumagigefabap.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/
    • https://cdn.shopify.com/s/files/1/0430/8231/7975/files/fuwa

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008c78.bin
fea599fb8a7786d434edcf7f7184584bc0481523ab33463ff84cc48f54d0ec2d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8C78 5256 bytes
font_01_sfnt_off00009e77.bin
2bd65f713ac22e5386056b003907d9401edc71d3a15052c7c960f93f072ac8bf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9E77 10332 bytes

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