Malicious PDF — malware analysis report

Static analysis result for SHA-256 ebf33c096535e5a4…

MALICIOUS

PDF

61.0 KB Created: 2020-08-02 15:18:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b373521df3f54ddd3e84771b3e379a5c SHA-1: 9a5a1fe384cb4368648592dad2de6ba795daae56 SHA-256: ebf33c096535e5a44270ec483380a368bf6ecd9222306fa9c5779573d96f0e1e
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains embedded links that redirect to a known malicious domain, ttraff.com. The document body, though heavily obfuscated, contains text that appears to be a lure related to 'trx workouts pdf'. The presence of numerous external PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning attempt to drive traffic to the malicious redirector.

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.com/pify?keyword=trx+workouts+pdf
    • http://files.goringvillagehall.co.uk/uploads/1/3/1/8/131858540/rajubanoworuna.pdf
    • http://files.jasperartisanjewelry.com/uploads/1/3/1/6/131606733/9849906.pdf
    • http://files.bodyprojectcollaborative.com/uploads/1/3/0/7/130739991/cef6a.pdf
    • https://cdn.shopify.com/s/files/1/0434/6806/2872/files/4695530376.pdf
    • https://cdn.shopify.com/s/files/1/0429/8155/6375/files/52559202053.pdf
    • https://cdn.shopify.com/s/files/1/0435/3071/5288/files/visuzifanilemimenumof.pdf
    • https://cdn.shopify.com/s/files/1/0431/5843/8056/files/sinogisilef.pdf
    • https://cdn.shopify.com/s/files/1/0433/4131/6249/files/19336817043.pdf
    • https://cdn.shopify.com/s/files/1/0429/7159/4911/files/1505971211.pdf
    • https://cdn.shopify.com/s/files/1/0432/0264/2075/files/fotelenawivufagefiv.pdf
    • https://cdn.shopify.com/s/files/1/0431/5214/6586/files/lefejadolutikajipalas.pdf
    • https://cdn.shopify.com/s/files/1/0427/9717/0847/files/zogirajumak.pdf
    • https://cdn.shopify.com/s/files/1/0428/1024/5286/files/xenulituguraloxe.pdf
    • https://cdn.shopify.com/s/files/1/0428/9875/1641/files/71106879690.pdf
    • https://cdn.shopify.com/s/files/1/0430/8592/2466/files/puzedu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/81667611697.pdf
    • https://cdn.shopify.com/s/files/1/0434/1327/4780/files/battle_for_skull_pass.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_off0000b2f4.bin
32f548ebc512431a5ae01fe30142940958026dcc9b75976277f7b03b3716e91c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB2F4 4968 bytes
font_01_sfnt_off0000c40a.bin
ca542da6410bb004933e213b0f819dff273fc56c2076b92cb003eccaa3c0bd90		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC40A 10296 bytes

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