Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd5600ffde3a2642…

MALICIOUS

PDF

41.2 KB Created: 2020-09-01 16:21:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aed1d52e7c61bbaab5fe8b808d8534f2 SHA-1: a1740bf414d2dcea78cbad7997f983fa413fefbd SHA-256: cd5600ffde3a2642bd84fb086c242441e73fd6561bccd7e8917af79f00ba70d9
150 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, many pointing to Shopify-hosted PDF files, which is indicative of a link farm. One critical heuristic identified a link to a known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the same redirector URL. This suggests the primary purpose is to direct users to potentially malicious content through a chain of links.

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.link/wix?keyword=dirty+minds+riddles+answers
    • https://cdn.shopify.com/s/files/1/0457/9783/4918/files/grand_theft_auto_san_andreas.pdf
    • https://cdn.shopify.com/s/files/1/0429/8565/2375/files/66087671323.pdf
    • https://cdn.shopify.com/s/files/1/0437/3181/2506/files/characteristics_of_poetic_language.pdf
    • https://cdn.shopify.com/s/files/1/0450/0901/0852/files/buying_and_selling_business_plan.pdf
    • https://static.usrfiles.com/ugd/5bb01c_87afe7e60b454d0aac81992088893157.pdf
    • https://static.usrfiles.com/ugd/b8c837_5941800d48d84f419c6aca8870b62f18.pdf
    • https://static.usrfiles.com/ugd/b8c837_8647b3c843e949dc9afb1a4109e3314e.pdf
    • https://cdn.shopify.com/s/files/1/0435/6413/8651/files/posetetebekopow.pdf
    • https://cdn.shopify.com/s/files/1/0459/9375/4781/files/wunibawazizurogevemo.pdf
    • https://static.usrfiles.com/ugd/b8c837_3d1bd5baa19547078d6a8cbcd280e828.pdf
    • https://static.usrfiles.com/ugd/cf14a4_1ddfe3c5ece04848b9af5d839efcd0c1.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_off0000620f.bin
db520a016a8aa771f14c73861b6e98a9bc83b2ba3665003738749ec543ddc13a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x620F 5164 bytes
font_01_sfnt_off0000739f.bin
6c4491129cfa3b2bd2c83f618da2f56bfa66fe3e778d360952fbed2767a7872d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x739F 11104 bytes

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