Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b4e2d2aca9000d9…

MALICIOUS

PDF

52.2 KB Created: 2020-08-08 14:29:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 495f92d600cf68f3eb946001c41b39dd SHA-1: ee1ed3620e1b1fa1fb4daf268205e9ba80c2d56f SHA-256: 8b4e2d2aca9000d93e3ab70828f1a9956e78c76094e02dea445ca69af8b81834
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, a technique often used to redirect users to malicious sites. One critical heuristic identified a link to known malicious redirector infrastructure (ttraff.com), and another flagged a large number of external PDF links, suggesting a link farm. The document body, though heavily obfuscated, contains the URL https://ttraff.com/pify?keyword=genetic+disorders+diseases+pdf, which is likely intended to lure the user into clicking on it.

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/pify?keyword=genetic+disorders+diseases+pdf
    • http://files.moredoorclassics.com/uploads/1/3/1/4/131453188/4191449.pdf
    • http://dukipon.k9justincase.com/uploads/1/3/0/8/130814328/bukakamowif-sezaxupugopak.pdf
    • http://files.globalevangelisticministries.net/uploads/1/3/1/3/131381658/bobivil-vidawoz.pdf
    • http://files.beeston-counselling-and-professional-development-network.com/uploads/1/3/1/4/131406605/1903623.pdf
    • https://cdn.shopify.com/s/files/1/0440/0336/0926/files/english_to_english_dictionary_file_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0439/1786/9211/files/gifosovelafusexavew.pdf
    • https://cdn.shopify.com/s/files/1/0430/9726/0192/files/64559101732.pdf
    • https://cdn.shopify.com/s/files/1/0435/6934/8763/files/access_database_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0432/4045/6360/files/83237733537.pdf
    • https://cdn.shopify.com/s/files/1/0432/0349/4043/files/24950552245.pdf
    • https://cdn.shopify.com/s/files/1/0434/1871/4264/files/4407540765.pdf
    • https://cdn.shopify.com/s/files/1/0434/3886/6593/files/sokobugepukikaludavulezev.pdf
    • https://cdn.shopify.com/s/files/1/0430/9221/3911/files/esl_classroom_objects.pdf
    • https://cdn.shopify.com/s/files/1/0437/9970/7810/files/regejizefinopagupe.pdf
    • https://cdn.shopify.com/s/files/1/0430/4571/6129/files/kividitadup.pdf
    • https://cdn.shopify.com/s/files/1/0432/3488/5792/files/78610614792.pdf
    • https://cdn.shopify.com/s/files/1/0433/7506/7297/files/xudobam.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_off00008dac.bin
c2c0820a36405dc4806b79328e6df7542a72696078263a4e5f56adb63cfa1f2d
pdf-font-stream PDF embedded font (sfnt) at offset 0x8DAC 5148 bytes
font_01_sfnt_off00009f41.bin
669d3261c5c985d95f2ea79747b9bf2af6ae7db7584044a361cd164aa716b3ea
pdf-font-stream PDF embedded font (sfnt) at offset 0x9F41 10608 bytes