Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3b49f9f518cb8e9…

MALICIOUS

PDF

44.7 KB Created: 2020-08-02 10:29:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4e687fa8c4995e5aa75024babb902d1e SHA-1: 645f760d01d38bf247bd572cb817037d88d62c7c SHA-256: d3b49f9f518cb8e9c0ec768afc0b2b7b40784af0cd850fa1dc79ed68dbdcf12b
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.ru/pify?keyword=what+is+cracked+minecraft'. The document body, though heavily obfuscated, contains text related to 'cracked minecraft' and the malicious URL. The presence of numerous embedded links, many pointing to Shopify domains, suggests a link farm or SEO poisoning tactic to drive traffic to the malicious redirector. No scripts were extracted, limiting the analysis of further payload delivery.

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=what+is+cracked+minecraft
    • http://files.carnival-in-venice.eu/uploads/1/3/1/4/131438891/gapil_rukopezo_gobejutarel_wejez.pdf
    • http://files.mylittlebiblestudy.com/uploads/1/3/1/4/131437516/141a87f2e4f57.pdf
    • http://files.tedhowe.com/uploads/1/3/1/4/131437563/6680135.pdf
    • https://cdn.shopify.com/s/files/1/0429/4865/7318/files/2018631160.pdf
    • https://cdn.shopify.com/s/files/1/0437/1510/0826/files/66749259291.pdf
    • https://cdn.shopify.com/s/files/1/0434/2333/4567/files/pokemon_emerald_rare_candies_code.pdf
    • https://cdn.shopify.com/s/files/1/0429/4138/2812/files/rutatewob.pdf
    • https://cdn.shopify.com/s/files/1/0430/5358/0441/files/94760845860.pdf
    • https://cdn.shopify.com/s/files/1/0431/9005/9157/files/16769503060.pdf
    • https://cdn.shopify.com/s/files/1/0439/3605/5454/files/autosofted_auto_typer.pdf
    • https://cdn.shopify.com/s/files/1/0431/4356/1376/files/61437877939.pdf
    • https://cdn.shopify.com/s/files/1/0431/4651/0504/files/kunozogututoxoxabedax.pdf
    • https://cdn.shopify.com/s/files/1/0438/4089/7181/files/66935567116.pdf
    • https://cdn.shopify.com/s/files/1/0431/0161/8330/files/mekukegaposujuvifugibedo.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000063f9.bin
99ffa2fe0c092f09403230c71f3689cd685b1d0173ff8c4c60002e191e091b45		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63F9 4984 bytes
font_01_sfnt_off000074c4.bin
ce7018cba196a95ab028a09c1c8ee58fbbcaba08fa4af6f74baf1c72f3f288dc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74C4 10312 bytes
font_02_sfnt_off00009803.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9803 4324 bytes

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