Malicious PDF — malware analysis report

Static analysis result for SHA-256 9acecc8f2cc5c843…

MALICIOUS

PDF

45.2 KB Created: 2020-08-31 17:04:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 56504219fbfdaba29d1e88e00cb5317b SHA-1: 6f2ad6793356b290b8d8d0d174ca29546c76255e SHA-256: 9acecc8f2cc5c843250f4f52892ed1658ff466a56fc5108dc6f333e82dc5598b
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Add-in T1059.001 PowerShell

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The primary malicious URL identified is https://ttraff.com/wix?keyword=after+effects+tutorials+free. The document body, though heavily obfuscated, also contains this URL and references to 'after effects tutorials free', suggesting a lure to entice clicks. The presence of a large number of external PDF links, many hosted on shopify.com, indicates a link farm strategy.

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/wix?keyword=after+effects+tutorials+free
    • https://cdn.shopify.com/s/files/1/0430/7035/7661/files/crafting_calculator_osrs.pdf
    • https://cdn.shopify.com/s/files/1/0433/9944/6693/files/love_dare_day_2.pdf
    • https://cdn.shopify.com/s/files/1/0436/8770/6777/files/dependencia_de_benzodiazepnicos.pdf
    • https://cdn.shopify.com/s/files/1/0437/4983/4901/files/90100993805.pdf
    • https://cdn.shopify.com/s/files/1/0430/4257/0402/files/59553533267.pdf
    • https://cdn.shopify.com/s/files/1/0432/2210/6271/files/75390369381.pdf
    • https://cdn.shopify.com/s/files/1/0431/2812/7650/files/rufejavuxirowuzirakujase.pdf
    • https://cdn.shopify.com/s/files/1/0431/6997/2392/files/20961731220.pdf
    • https://cdn.shopify.com/s/files/1/0431/6479/5046/files/fobuvoz.pdf
    • https://cdn.shopify.com/s/files/1/0441/2728/9496/files/xadojevakixexiwa.pdf
    • https://cdn.shopify.com/s/files/1/0430/3824/5017/files/zojimovid.pdf
    • https://static.usrfiles.com/ugd/7f16bd_4a16d46b6d2b462796f5278006c73e60.pdf
    • https://static.usrfiles.com/ugd/db1da1_ac5e41a68ce54e9fa009bb49fcbc7540.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_off000074e8.bin
209c80247352e6d13e249b9d594934568bc9a76fbc9eaab9b63b750295ec23c7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74E8 4864 bytes
font_01_sfnt_off00008588.bin
d250730c4c36a37af294f94d73cc6f8770df82896d3d4d50328c3b46eaf1653e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8588 10096 bytes

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