Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e2cbe6a7f1ce89f…

MALICIOUS

PDF

44.2 KB Created: 2020-08-29 03:26:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 85a088005c44b95cb88bdacf81f3cea0 SHA-1: 637c3405d866f0fc5a074c61a50459060e7b67de SHA-256: 9e2cbe6a7f1ce89f800af9e09767642737a859c1387b7c128b32f4e0ff1abaae
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a mass of external links, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/wix?keyword=jeu+de+nim+solution', which is flagged as malicious. This suggests the document's primary purpose is to redirect users to malicious infrastructure, likely for phishing or to download further malware.

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.cc/wix?keyword=jeu+de+nim+solution
    • https://static.usrfiles.com/ugd/b8c837_aca25c648844406a92e44be2b257f3c1.pdf
    • https://static.usrfiles.com/ugd/b8c837_3760f25467aa43bd96de840d02925457.pdf
    • https://static.usrfiles.com/ugd/b8c837_dd4de72e93eb4c70991de63e2712227d.pdf
    • https://static.usrfiles.com/ugd/b8c837_9a0d2140dc5c485c8c0658163308a9da.pdf
    • https://cdn.shopify.com/s/files/1/0429/7215/1959/files/setowejopuwogulavonemitu.pdf
    • https://cdn.shopify.com/s/files/1/0429/6510/6847/files/nabofirufezagu.pdf
    • https://cdn.shopify.com/s/files/1/0437/2529/1671/files/pelilisebusewidapir.pdf
    • https://cdn.shopify.com/s/files/1/0462/2440/8730/files/61385393457.pdf
    • https://cdn.shopify.com/s/files/1/0431/6512/2720/files/58357121368.pdf
    • https://cdn.shopify.com/s/files/1/0429/2454/0071/files/fufopepa.pdf
    • https://cdn.shopify.com/s/files/1/0431/4434/7802/files/39434189973.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_off00006d19.bin
b2fd1d0f9bfee2112bb3f86430ec95b757bc5e25fdee9cac2d7155e6c6d0ac74		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D19 4656 bytes
font_01_sfnt_off00007cd4.bin
a4cb3a8dd9b29b7e95bea4b6e0cad06ee919aa746e611f3da478e3960c9f836a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CD4 12392 bytes

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