Malicious PDF — malware analysis report

Static analysis result for SHA-256 abc673be44772621…

MALICIOUS

PDF

42.9 KB Created: 2020-08-06 01:39:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4398178b9b69e549d29a7905cc9eada3 SHA-1: c10a28e4277be4ac732371937ce7a80347929791 SHA-256: abc673be447726217426aa6e28343318e4399a5a6f8b9c2fbd586f68b61c0c54
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it directs users to a known malicious URL. Additionally, PDF_SEO_LINK_FARM suggests the document is part of a link farm, likely for SEO manipulation or to distribute malicious content. The embedded URL https://ttraff.cc/pify?keyword=analog+to+digital+converter+ic+pdf is the primary indicator of malicious intent, likely serving as a redirector to a further stage of attack. The document body, though heavily obfuscated, contains references to the redirector URL and a seemingly benign PDF hosted on Shopify, suggesting a lure.

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.cc/pify?keyword=analog+to+digital+converter+ic+pdf
    • http://files.andreagammon.com/uploads/1/3/0/9/130969476/dfb81ba20106cac.pdf
    • http://files.bearrivermn.com/uploads/1/3/2/6/132680976/3066468.pdf
    • http://files.balancemassagebyann.com/uploads/1/3/1/0/131069890/rujifabibi.pdf
    • https://cdn.shopify.com/s/files/1/0434/5312/0664/files/lumaxebakokipodamanif.pdf
    • https://cdn.shopify.com/s/files/1/0430/1216/1685/files/game_of_life_spinner.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xefafozerokadugatevaru.pdf
    • https://cdn.shopify.com/s/files/1/0437/6467/8807/files/fofojuk.pdf
    • https://cdn.shopify.com/s/files/1/0436/5864/1573/files/63133532003.pdf
    • https://cdn.shopify.com/s/files/1/0434/1900/9173/files/hybrid_and_alternative_fuel_vehicles_4th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0430/5525/1605/files/50738474940.pdf
    • https://cdn.shopify.com/s/files/1/0438/5597/0464/files/91122880195.pdf
    • https://cdn.shopify.com/s/files/1/0430/9037/8909/files/nisibedigexamagovameg.pdf
    • https://cdn.shopify.com/s/files/1/0430/4489/6917/files/13820356144.pdf
    • https://cdn.shopify.com/s/files/1/0428/9753/9231/files/defects_in_sheet_metal_forming_process.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_off000069b1.bin
1c81f34f48cb6f9bbb789abd133a9aa5c9e345e56318122a31822aa2d2408a4e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69B1 5192 bytes
font_01_sfnt_off00007b77.bin
1470addaee4c4dc212318c2a9f9c032fce711c0e27aa8c158c363d0277463cb9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B77 10172 bytes

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