Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f6a77dfaef2e20a…

MALICIOUS

PDF

61.4 KB Created: 2020-07-30 10:22:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 84c4881804602a99cfefb751527effd3 SHA-1: bbbf69678b9c084505feb8d38b90c506ad0e42c4 SHA-256: 3f6a77dfaef2e20a1c7e68f92ef01b5f5a3ff39eab911639362e18f8cbc8eb09
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.com'. Additionally, it exhibits a PDF link farm behavior, embedding numerous external links, many hosted on Shopify. The document body, though heavily obfuscated, contains text related to 'programmable automation courses', suggesting a lure to trick users into clicking the malicious link.

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=cours+automates+programmables+pdf
    • http://files.bondkitchens.co.uk/uploads/1/3/0/9/130969004/jadojitamupese-dapajabubojoxa-fetepex.pdf
    • http://files.exsaltdressings.com/uploads/1/3/1/4/131453312/3765994.pdf
    • http://files.interstatevapor.com/uploads/1/3/0/7/130738876/4422565.pdf
    • http://files.botecoatx.com/uploads/1/3/1/6/131606789/3f4bea0194ccb4.pdf
    • http://files.shelbyranch.ca/uploads/1/3/2/6/132680986/5089058.pdf
    • http://files.botecoatx.com/uploads/1/3/1/6/131606789
    • https://cdn.shopify.com/s/files/1/0432/0349/4043/files/4990094783.pdf
    • https://cdn.shopify.com/s/files/1/0433/4164/3928/files/4236808310.pdf
    • https://cdn.shopify.com/s/files/1/0429/6520/5141/files/xadukafomobaxokonu.pdf
    • https://cdn.shopify.com/s/files/1/0431/0047/1456/files/56895013936.pdf
    • https://cdn.shopify.com/s/files/1/0431/0990/8637/files/41653355808.pdf
    • https://cdn.shopify.com/s/files/1/0435/5473/4235/files/tevodatominadixodif.pdf
    • https://cdn.shopify.com/s/files/1/0429/6802/3194/files/99550960201.pdf
    • https://cdn.shopify.com/s/files/1/0435/3631/8616/files/96870411221.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/99640144283.pdf
    • https://cdn.shopify.com/s/files/1/0434/6249/2310/files/feditepalutixuxazujas.pdf
    • https://cdn.shopify.com/s/files/1/0432/1571/6519/files/xixedefalakidadewanage.pdf
    • https://cdn.shopify.com/s/files/1/0429/4718/2759/files/63019242075.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000923e.bin
f1a1df54a031950d9274666b546517c4915828530d2266dfd94d29d87fc5865d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x923E 1760 bytes
font_01_sfnt_off00009a9d.bin
84cc3c8bfed6ed830039b072427ca3f2923cc9eea1cba7bd425bddb2b449b936		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9A9D 5252 bytes
font_02_sfnt_off0000ac7c.bin
415768e52c753ea1df74e2bb11e09db0ca5fd6813bcdf0d1f2d2e58ba218f043		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAC7C 10508 bytes
font_03_sfnt_off0000d05a.bin
d5eff2adaf8c6887847be3ffc34edeeba3c14b7a3f0d11453606f8f3b96b22af		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD05A 16192 bytes

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