Malicious PDF — malware analysis report

Static analysis result for SHA-256 446d7de5b482da96…

MALICIOUS

PDF

67.3 KB Created: 2020-08-10 12:14:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0e39726d6e0f7bf22380cee4e084dc0c SHA-1: 14cc70e86130d6be0f9fa35950da94095e4bbd07 SHA-256: 446d7de5b482da9626eff7dd4c5b4fb31fdff61ac1e9876773b37700d534ac9b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains multiple embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains a URL that appears to be the same as the malicious redirector. The presence of a 'Password-protected archive lure' heuristic suggests the document is intended to trick users into downloading an archive, likely containing malware, by providing password instructions. The PDF also exhibits characteristics of a link farm, aiming to improve search engine ranking for malicious content.

Heuristics 4

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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=norme+afnor+gratuite+pdf
    • http://wobezem.jannlphotography.com/uploads/1/3/1/4/131406717/mesanaxizede.pdf
    • http://files.alanbirtwistle.com/uploads/1/3/0/8/130874510/530bc4228d2f7.pdf
    • http://files.cecilyscloset.org/uploads/1/3/1/3/131398323/wibekirekir.pdf
    • https://cdn.shopify.com/s/files/1/0439/0020/7272/files/zunetodirozu.pdf
    • https://cdn.shopify.com/s/files/1/0434/5937/9357/files/temperamentos_transformados_tim_lahaye_gratis_espaol.pdf
    • https://cdn.shopify.com/s/files/1/0433/5583/2471/files/zuxawi.pdf
    • https://cdn.shopify.com/s/files/1/0437/3607/2341/files/pusoxi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zobirunutopuwipigodilig.pdf
    • https://cdn.shopify.com/s/files/1/0436/0772/0094/files/relosikogavopotoji.pdf
    • https://cdn.shopify.com/s/files/1/0436/1509/2894/files/add_password_to_zip_file.pdf
    • https://cdn.shopify.com/s/files/1/0437/3423/7345/files/pepoduzidowip.pdf
    • https://cdn.shopify.com/s/files/1/0430/6200/1825/files/16173009976.pdf
    • https://cdn.shopify.com/s/files/1/0433/2997/8526/files/9579360623.pdf
    • https://cdn.shopify.com/s/files/1/0434/6760/4128/files/93193116569.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_off0000bb22.bin
f3f207eeca5579eb2b296d473fddf043841e37b4766e07ad4626fdffc718601b
pdf-font-stream PDF embedded font (sfnt) at offset 0xBB22 5120 bytes
font_01_sfnt_off0000cc81.bin
14563b044df5397ec8489e186586b7657964a08159687206f39dfd7b6a783a11
pdf-font-stream PDF embedded font (sfnt) at offset 0xCC81 17520 bytes