Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a6d776d8ceac3a1…

MALICIOUS

PDF

38.6 KB Created: 2020-08-14 19:50:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 48037ef1d870f20f15b63dd83ca97cee SHA-1: 3835ff0168c08836fbc5fad82b7b4026b89754ae SHA-256: 3a6d776d8ceac3a150852d4102dadd59d397790fb0f32564cd5764f22d4e9dbf
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a heuristic match for a malicious redirector link, specifically pointing to 'https://ttraff.ru/pify?keyword=science+quiz+games'. The document body also contains this URL and numerous other links, many hosted on cdn.shopify.com, suggesting a link farm or redirection strategy. The presence of a malicious redirector indicates an attempt to lead the user to a harmful destination, likely for phishing or malware distribution.

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=science+quiz+games
    • http://files.mentertainmentgroup.com/uploads/1/3/1/4/131454850/4321752.pdf
    • http://files.brownwoodhealthdepartment.com/uploads/1/3/1/8/131871569/duxopixogozopil-buzowafuderu-xarasomamuvufem-vabudagidila.pdf
    • https://cdn.shopify.com/s/files/1/0431/7125/0333/files/natijetasatemunosu.pdf
    • https://cdn.shopify.com/s/files/1/0429/5750/4668/files/42658022809.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/40369191557.pdf
    • https://cdn.shopify.com/s/files/1/0435/4283/9455/files/cctv_camera_settings.pdf
    • https://cdn.shopify.com/s/files/1/0429/4151/3894/files/72974906062.pdf
    • https://cdn.shopify.com/s/files/1/0435/5883/0231/files/46187035652.pdf
    • https://cdn.shopify.com/s/files/1/0429/6104/3605/files/nubowusajenevinelego.pdf
    • https://cdn.shopify.com/s/files/1/0432/8374/2884/files/50323241300.pdf
    • https://cdn.shopify.com/s/files/1/0433/3905/5258/files/ziluseneluzesasokogakaw.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_off0000586a.bin
3ac1df46bb0b7cd86f52ff71195e3eb4a68d52fb5cf1c489451ad6be55ae4922		 pdf-font-stream PDF embedded font (sfnt) at offset 0x586A 5268 bytes
font_01_sfnt_off00006a44.bin
cb9ebe9569f468ca62d2c5deb4f39a855247457618fffa63b0cb477204f2c688		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A44 10580 bytes

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