Malicious PDF — malware analysis report

Static analysis result for SHA-256 480728ee56fa7eda…

MALICIOUS

PDF

39.1 KB Created: 2020-08-22 14:29:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 627e3672c947b4ae7617f84868485b51 SHA-1: cdbe2546f2dc73c37d54c8ad18ddba07802ce244 SHA-256: 480728ee56fa7edae0889d8d39a398619f993936b44f958a88a646d92dae7a1c
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded URLs, many of which point to a redirector service. The primary malicious URL identified is 'https://ttraff.ru/pify?keyword=converting+circular+structure+to+json+angular+template', which is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL and numerous other links hosted on cdn.shopify.com and other domains, suggesting a link farm or spam campaign. No scripts were extracted from this sample.

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=converting+circular+structure+to+json+angular+template
    • http://files.edocig.com/uploads/1/3/1/0/131069887/3568973.pdf
    • http://files.jashancatering.com/uploads/1/3/2/6/132695862/lowulisa_liwuwumadoz.pdf
    • http://files.vantechlibrary.org/uploads/1/3/1/4/131483955/8597970.pdf
    • https://cdn.shopify.com/s/files/1/0432/6300/0734/files/cartoon_network_cartoons.pdf
    • https://cdn.shopify.com/s/files/1/0438/0770/3201/files/buliketotemoze.pdf
    • https://cdn.shopify.com/s/files/1/0435/2350/6336/files/guidelines_for_effective_communication_with_older_adults.pdf
    • https://cdn.shopify.com/s/files/1/0428/4363/5879/files/82009774495.pdf
    • https://cdn.shopify.com/s/files/1/0434/0423/0805/files/amadou_hampate_ba_gratuit.pdf
    • https://cdn.shopify.com/s/files/1/0428/6559/0438/files/fusionner_2_jpg_en_mac.pdf
    • https://cdn.shopify.com/s/files/1/0456/8471/9775/files/cambium_epmp_1000_manual.pdf
    • https://cdn.shopify.com/s/files/1/0438/4414/1218/files/arterial_blood_gases.pdf
    • https://cdn.shopify.com/s/files/1/0446/1661/4051/files/calibration_methods_in_analytical_chemistry.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/43377474007.pdf
    • https://cdn.shopify.com/s/files/1/0436/0686/8126/files/vixunigelu.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_off0000597f.bin
4c23af89d9f069bcd6ff919c29a2cab3c56942a1ef84a8b2bed4780f6641cdbc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x597F 5292 bytes
font_01_sfnt_off00006b7d.bin
8bbc136deaedd4954c9ac6c2406357c3a3360f3841e72c0a4456f069524b4415		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B7D 10476 bytes

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