Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d17dccc534797b7…

MALICIOUS

PDF

41.0 KB Created: 2020-08-23 19:09:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 787816db9d6fd3264dbd9c579b54fce5 SHA-1: 248a51387a7f75aa84da6b462a15b10b8585ad3c SHA-256: 3d17dccc534797b7dc136193365e7f5e77a8a03af73e42db74b8bdb8d16e7246
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external resources. One critical heuristic identified a link to a known malicious redirector infrastructure, specifically 'ttraff.ru'. The document body, though partially corrupted, suggests a lure related to 'lab equipment names and pictures worksheet'. The presence of numerous links, including those to potentially malicious domains, indicates an attempt to redirect users to harmful content, 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=lab+equipment+names+and+pictures+worksheet
    • http://nigaweva.vivacebu.com/uploads/1/3/0/7/130775320/kazawixubaxix_ziwaki_vizebezifuzaluz_pumeno.pdf
    • http://files.sustainablegreenaquaculture.com/uploads/1/3/1/0/131070508/6c237f412402c.pdf
    • http://vutiv.intuitivecoachingwithamy.com/uploads/1/3/1/8/131871729/4293934.pdf
    • https://cdn.shopify.com/s/files/1/0433/8365/2506/files/nesodekoxapufoviviwe.pdf
    • https://cdn.shopify.com/s/files/1/0437/9413/7249/files/sniper_strike_blood_killer_mod_apk.pdf
    • https://cdn.shopify.com/s/files/1/0432/4923/8171/files/fesojikisewadibuzimunal.pdf
    • https://cdn.shopify.com/s/files/1/0433/4052/9816/files/23729881526.pdf
    • https://cdn.shopify.com/s/files/1/0431/6554/8708/files/tevozaxedotudelos.pdf
    • https://cdn.shopify.com/s/files/1/0434/2949/4940/files/31771575583.pdf
    • https://cdn.shopify.com/s/files/1/0428/7247/1718/files/aprendizaje_basado_en_proyectos_definicion.pdf
    • https://cdn.shopify.com/s/files/1/0431/1112/1063/files/white_stained_glass_minecraft.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/28821374719.pdf
    • https://cdn.shopify.com/s/files/1/0431/4628/1121/files/95388222923.pdf
    • https://cdn.shopify.com/s/files/1/0427/7082/5382/files/guided_reading_activity_3-_3_world_history.pdf
    • https://cdn.shopify.com/s/files/1/0428/8184/3353/files/37137120309.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_off00006071.bin
5aae473c31ebc4c585f17d9cd8173593accd1a0925dec85fc3814c51cd7ed3e6
pdf-font-stream PDF embedded font (sfnt) at offset 0x6071 5644 bytes
font_01_sfnt_off0000737e.bin
93ea17fe281629d86302d00e895c8f0a2a8b2680d5c4b9c34b7cdc5d70d186f3
pdf-font-stream PDF embedded font (sfnt) at offset 0x737E 10380 bytes