Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8f3fdf270c334ef…

MALICIOUS

PDF

36.8 KB Created: 2020-09-18 22:47:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a00ac89576ceef0da778b8171ebf9b84 SHA-1: cf7194af1810fd08b979f900a59ae316193bcb27 SHA-256: f8f3fdf270c334ef8504b14e77c062354b2365669f350870cd053bcd3a6e0346
150 Risk Score

Malware Insights

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

The PDF contains a link that redirects to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body and embedded URLs suggest a lure related to '3d tanks unblocked', likely a social engineering tactic to encourage clicks. The PDF_SEO_LINK_FARM heuristic indicates a large number of embedded links, further supporting a malicious intent to distribute harmful content or redirect users to phishing sites.

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.club/wix?keyword=3d+tanks+unblocked
    • http://wezux.manhattansweetsboutiquebakery.com/uploads/1/3/0/7/130738638/govexiwubeziwu.pdf
    • http://sivunum.miguelamado.com/uploads/1/3/1/4/131453850/gejemib.pdf
    • http://files.luludeuxmillinery.com/uploads/1/3/0/8/130874252/7517901.pdf
    • https://cdn.shopify.com/s/files/1/0432/0926/1217/files/report_domestic_abuse_anonymously_uk.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/43692268827.pdf
    • https://cdn.shopify.com/s/files/1/0435/3549/9418/files/lomebul.pdf
    • https://cdn.shopify.com/s/files/1/0434/4155/3575/files/dofuzorozixu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0350/1989/files/sagajelisafexuxisomasuk.pdf
    • https://cdn.shopify.com/s/files/1/0438/8156/2280/files/bubuzop.pdf
    • https://870da2f9-dfaf-43c6-ad16-2d1ee08921b0.filesusr.com/ugd/fc840b_cdb10f65945c41c3bc2c4d301627a9d5.pdf?index=true
    • https://666b369a-6e16-4dac-a597-cef2208a7e65.filesusr.com/ugd/5f5755_6096d48c9d3b41bd9c971111ed6c6f22.pdf?index=true
    • 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_off00005277.bin
3696b990c0a95d07aad7d6ce2343ceda88eac93da61fef4d371964bd5f7cca33		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5277 5108 bytes
font_01_sfnt_off000063ea.bin
9e85785e8f0b4c8c9ddaab79e28dd23436d80fb09e9a7e370d56fe88346e5849		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63EA 10324 bytes

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