Malicious PDF — malware analysis report

Static analysis result for SHA-256 3fe73e696a921582…

MALICIOUS

PDF

41.5 KB Created: 2020-09-02 06:43:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bc50316f1714b805633528718781cafe SHA-1: 9066c701b2cfadff6692db282fc370c3ce7b0fc2 SHA-256: 3fe73e696a921582d47fd9b7404ad5276142c313eb358d1aedba9e52a70c52ed
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.me/pify?keyword=cpr+guidelines+infant'. This URL is likely part of a phishing or scam campaign designed to redirect users to malicious content. The document body, though heavily obfuscated, also contains this URL, reinforcing its role as the primary lure. The presence of numerous other PDF links, while many are benign, suggests a link farm strategy to improve search engine visibility or distribute malicious links.

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.me/pify?keyword=cpr+guidelines+infant
    • https://cdn.shopify.com/s/files/1/0432/1987/8048/files/acharnement_thrapeutique.pdf
    • https://cdn.shopify.com/s/files/1/0434/0583/6444/files/pr_crisis_management_plan_template.pdf
    • https://cdn.shopify.com/s/files/1/0431/2471/9773/files/aorus_z370_ultra_gaming_manual.pdf
    • https://cdn.shopify.com/s/files/1/0441/0825/1288/files/59659932465.pdf
    • https://static.usrfiles.com/ugd/f0e51d_002aa869ced348dfa8c3cf2f7247863d.pdf
    • https://static.usrfiles.com/ugd/c1108c_5f6b78434fa34ad58d79088b2aedc5ad.pdf
    • https://static.usrfiles.com/ugd/87b9a8_b7b9b710d4004a54802743ec670b90a7.pdf
    • https://static.usrfiles.com/ugd/e3ff21_727a469d65004ed589b2b89319e09c88.pdf
    • https://static.usrfiles.com/ugd/e4d7df_36d24c2e62244396832994f16eecd6c4.pdf
    • https://static.usrfiles.com/ugd/b8c837_157440d2edae43d6b7bdffdd7c5d561d.pdf
    • https://static.usrfiles.com/ugd/cd81e9_dd6f62a2e5c24df0926369fa24627d59.pdf
    • https://cdn.shopify.com/s/files/1/0430/7661/6341/files/36032686733.pdf
    • https://cdn.shopify.com/s/files/1/0435/4634/5640/files/42266765730.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_off000064b0.bin
a9bcd9a8b58ab87b35919cc53676a24edb688ab94ffdeeb4f94313859761c3c9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64B0 5112 bytes
font_01_sfnt_off00007624.bin
4367077474a2d02b06cbd5aa00d332d73f2bf112728faa9c41fc306d7a2952e5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7624 10412 bytes

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