Malicious PDF — malware analysis report

Static analysis result for SHA-256 799f3301fd0d32df…

MALICIOUS

PDF

43.2 KB Created: 2020-08-12 21:32:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8d9aa03d40ab538eba3a411e450afb2a SHA-1: b4098f6f98ef7d69f39fa6f613282431b24163d4 SHA-256: 799f3301fd0d32dfef6766aa467f789d90074d363ca71e78e4e7ae73d841a735
120 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to Shopify domains, but one critical link redirects to a known malicious domain, ttraff.ru. This indicates a phishing or redirection attempt disguised as a legitimate document. The document body, though heavily obfuscated, contains the malicious URL, reinforcing the attack pattern. No scripts were extracted, limiting the analysis of further stages.

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=fundamentals+of+data+communication+and+networking+pdf
    • http://files.underthemidnightmoon.com/uploads/1/3/1/3/131379231/4340061.pdf
    • http://taxisa.thecaveacademy.org/uploads/1/3/1/3/131398362/daad8d1ee50d298.pdf
    • http://files.alysonallen.com/uploads/1/3/1/8/131871859/9690646.pdf
    • http://jadil.misfitsoffilm.com/uploads/1/3/0/7/130775440/pokilepor.pdf
    • http://files.christianlindke.com/uploads/1/3/0/8/130874067/79a5730.pdf
    • https://cdn.shopify.com/s/files/1/0436/0149/4178/files/46611897397.pdf
    • https://cdn.shopify.com/s/files/1/0431/9356/5342/files/debug_mocha_tests.pdf
    • https://cdn.shopify.com/s/files/1/0431/9828/3940/files/argentina_economic_crisis.pdf
    • https://cdn.shopify.com/s/files/1/0445/5153/6799/files/matrix_multiplier_calculator.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lavijado.pdf
    • https://cdn.shopify.com/s/files/1/0431/2052/5469/files/40756623356.pdf
    • https://cdn.shopify.com/s/files/1/0427/9464/7719/files/improving_self_esteem_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0440/3462/1590/files/59239324383.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lovukapovilelogitolosir.pdf
    • https://cdn.shopify.com/s/files/1/0433/6975/8874/files/44576282821.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_off00006aa9.bin
72a39075c53ec9a98c7f0a93069996bb0d9425e4b8de7a0fd0ee5c29e8e1ed6a
pdf-font-stream PDF embedded font (sfnt) at offset 0x6AA9 5588 bytes
font_01_sfnt_off00007da7.bin
5c8d4515954b9bbb984be1ac5acb2ed4fc5bc7269b6d62d5ed21fe06592a0860
pdf-font-stream PDF embedded font (sfnt) at offset 0x7DA7 9944 bytes