Malicious PDF — malware analysis report

Static analysis result for SHA-256 c00652feddc2afac…

MALICIOUS

PDF

46.9 KB Created: 2020-08-06 16:39:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0131efcdcbfb3a6b6fcd8609abb85c7c SHA-1: 33b52dadcbcd25f39255cee8fba9a7046522b10a SHA-256: c00652feddc2afac1d1b0041037a719d204ce60649bb8cf4aab56381345a5aa8
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with the primary malicious redirector identified as https://ttraff.ru/pify?keyword=network+analysis+arcgis+pdf. This suggests the document is designed to lure users into clicking these links, likely leading to phishing pages or malware downloads. The ML classifier strongly supports the malicious nature of this PDF.

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.ru/pify?keyword=network+analysis+arcgis+pdf
    • http://files.halfpintchildrensboutique.com/uploads/1/3/2/3/132303378/ximegivomozapute.pdf
    • http://files.pepinstruckparts.com/uploads/1/3/0/9/130969791/df6453768f50.pdf
    • http://files.montanabyair.com/uploads/1/3/0/7/130775607/lejotadaguv.pdf
    • http://files.shivapianostudio.com/uploads/1/3/0/8/130815277/2add9fdf3.pdf
    • http://files.tilliesnevada.com/uploads/1/3/1/3/131379612/xapixivote-pipugu-neruxesivalu-wifuf.pdf
    • https://cdn.shopify.com/s/files/1/0437/2817/5255/files/31791964733.pdf
    • https://cdn.shopify.com/s/files/1/0428/6044/5855/files/50910294813.pdf
    • https://cdn.shopify.com/s/files/1/0430/6350/9141/files/93564977243.pdf
    • https://cdn.shopify.com/s/files/1/0434/0878/5562/files/77691585718.pdf
    • https://cdn.shopify.com/s/files/1/0432/4291/3952/files/32835911278.pdf
    • https://cdn.shopify.com/s/files/1/0435/6158/2741/files/buxusesozoxoxapaseroliler.pdf
    • https://cdn.shopify.com/s/files/1/0430/2218/8701/files/42591935023.pdf
    • https://cdn.shopify.com/s/files/1/0440/7230/4790/files/93675892151.pdf
    • https://cdn.shopify.com/s/files/1/0430/6432/8345/files/cognitive_behavioral_therapy_judith_beck.pdf
    • https://cdn.shopify.com/s/files/1/0432/5448/1058/files/10876287040.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_off000078d5.bin
e03468fcd956c9f15aeee52f327918b3d86a6276ad94b14403f01ad502197c64		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78D5 5552 bytes
font_01_sfnt_off00008bf8.bin
179dc1d7f00f13742937640ef35743aa95fed1ab2d72dbcc53a5ff498ec40812		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8BF8 10192 bytes

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