Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2e8773cca3402c6…

MALICIOUS

PDF

32.0 KB Created: 2020-10-27 03:35:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ed6879533f626e9d988c678e58e91256 SHA-1: 03989d837c47f85ee01d127c54abff2f98aacf8a SHA-256: e2e8773cca3402c63ec00bba8682338c0872068cbf4bee9949e3162158b37d73
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains embedded links, one of which, 'https://ttraff.link/123?keyword=country+kitchen+buffet+menu', is flagged as a known malicious redirector. The document also exhibits characteristics of a link farm, with numerous embedded URLs pointing to various PDF files, suggesting an attempt to manipulate search engine results or distribute malicious content. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

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.link/123?keyword=country+kitchen+buffet+menu
    • https://tubenuluni.weebly.com/uploads/1/3/1/4/131437864/wutumozaj.pdf
    • https://putigazabikikim.weebly.com/uploads/1/3/2/6/132682718/6454644.pdf
    • https://lowizozexide.weebly.com/uploads/1/3/0/7/130776176/4520ce26254d2.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0479/7025/5004/files/kejamagijogonaguw.pdf
    • https://cdn.shopify.com/s/files/1/0432/9095/1848/files/super_smash_bros_ultimate_download_apk_android.pdf
    • https://cdn.shopify.com/s/files/1/0504/4597/5729/files/old_ncert_history_class_10.pdf
    • https://uploads.strikinglycdn.com/files/3885db19-4542-4112-ac9a-499103243f07/34242219431.pdf
    • https://uploads.strikinglycdn.com/files/75831ee5-d102-4fb0-81ca-0fc7fad2961f/44523206668.pdf
    • https://cdn.shopify.com/s/files/1/0483/9233/9614/files/tomudavebalijobego.pdf
    • https://cdn.shopify.com/s/files/1/0492/4188/2780/files/wisisokilon.pdf
    • https://cdn.shopify.com/s/files/1/0432/0896/6301/files/117824513.pdf
    • https://cdn.shopify.com/s/files/1/0492/4404/5468/files/coulombs_law_formula_calculator.pdf
    • https://cdn.shopify.com/s/files/1/0432/0863/8632/files/91265836584.pdf
    • https://uploads.strikinglycdn.com/files/ebad968b-2a46-4090-bdcd-f41dfdd8c2fb/83836424253.pdf
    • https://uploads.strikinglycdn.com/files/9105b96d-a9c3-4007-8578-e61547ecd237/sakuredopumalufosa.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006747.bin
67eecc44b342f3b8df23da2aa927ca9cd42bfe7083d34c3cf6b99c70aa1601c1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6747 4912 bytes

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