Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0d892437e8db66d…

MALICIOUS

PDF

42.3 KB Created: 2020-08-15 21:57:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 04da035a9aebb799e9a2570b0ebf4edc SHA-1: 922ccd401969df289ee821d8d3e856c1b5b714c9 SHA-256: f0d892437e8db66d911a7822b9b604da519b3775f158492dbe5a5f8898401a68
150 Risk Score

Malware Insights

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

The PDF file was flagged by multiple critical heuristics for containing malicious redirector links and a link farm. The document body, though heavily obfuscated, contains URLs that are also present in the heuristic findings. The primary malicious URL identified is https://ttraff.com/wb?keyword=tcpdf%20php%20code, which is likely used to redirect users to further malicious content. The presence of numerous links hosted on cdn.shopify.com and other domains suggests a coordinated effort to distribute malicious content or manipulate search engine results.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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/wb?keyword=tcpdf%20php%20code
    • http://files.515aircadets.ca/uploads/1/3/0/9/130968933/kafurososiwid_nukevogoguza_repuzefiwile_mizikavosa.pdf
    • http://xufekivur.reefshawproductions.com/uploads/1/3/1/4/131438161/butodututizedoweturo.pdf
    • https://cdn.shopify.com/s/files/1/0430/1747/0101/files/45981353590.pdf
    • https://cdn.shopify.com/s/files/1/0437/9397/3405/files/vewovavubabokez.pdf
    • https://cdn.shopify.com/s/files/1/0431/3304/2839/files/kivazova.pdf
    • https://cdn.shopify.com/s/files/1/0432/9465/4632/files/75085339608.pdf
    • https://cdn.shopify.com/s/files/1/0431/7652/5988/files/guzanixijotuzoweto.pdf
    • https://cdn.shopify.com/s/files/1/0433/6461/4303/files/vebudokenu.pdf
    • https://cdn.shopify.com/s/files/1/0428/7270/1095/files/78457588684.pdf
    • https://cdn.shopify.com/s/files/1/0431/3897/3857/files/32223340261.pdf
    • https://cdn.shopify.com/s/files/1/0434/4833/6536/files/zaxelijifapisoxuv.pdf
    • https://cdn.shopify.com/s/files/1/0435/4175/8101/files/ghost_world_comic.pdf
    • https://cdn.shopify.com/s/files/1/0434/6953/7432/files/fofimusezokivamelilejavu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9105/1161/files/30549361154.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_off00006128.bin
ee8aa4334acd8b459b84002857794f204bc07b9497ee7f63f2e4fa48781772d7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6128 4676 bytes
font_01_sfnt_off0000710d.bin
e715ccaf75d4b9998900bf50fc507a0c2b32f2951e4b507f73071a091800c579		 pdf-font-stream PDF embedded font (sfnt) at offset 0x710D 13620 bytes

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