Malicious PDF — malware analysis report

Static analysis result for SHA-256 eae6a94089a91114…

MALICIOUS

PDF

38.6 KB Created: 2020-08-30 23:44:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fb6371c3b2fdf0ec980ba6a0f6f20b9f SHA-1: 9a52fb4e76147f88b74eea175939bcecd5c01580 SHA-256: eae6a94089a9111495a634b23048c612c920d942de0805d35928fa11061c0084
152 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF was flagged by a critical heuristic for linking to known malicious redirector infrastructure. Additionally, it contains a large number of embedded links, many pointing to static.usrfiles.com, suggesting a link farm or redirection strategy. The ML classifier also strongly indicated maliciousness. The presence of the URL https://ttraff.me/wix?keyword=c2h5oh+intermolecular+forces is a high-priority indicator.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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/wix?keyword=c2h5oh+intermolecular+forces
    • https://static.usrfiles.com/ugd/b8c837_cda46ba4730747419bd7f9e1bb3a2070.pdf
    • https://static.usrfiles.com/ugd/b8c837_2f5f02556bc54717b8328048df782305.pdf
    • https://static.usrfiles.com/ugd/4f270c_5d3b712a12b347fbbe08eed9b0c62637.pdf
    • https://static.usrfiles.com/ugd/36f25b_cd974135c8164e25b5e84af905104ba6.pdf
    • https://static.usrfiles.com/ugd/b8c837_e97d1b49d85246f88f14ebaee3a5159f.pdf
    • https://static.usrfiles.com/ugd/b8c837_790f5b5790084de09fb769b98c727ceb.pdf
    • https://static.usrfiles.com/ugd/e02969_1ab2e07a27484c00923bebe6a04b757b.pdf
    • https://static.usrfiles.com/ugd/b8c837_cac386c57616490880203ada5fb27431.pdf
    • https://cdn.shopify.com/s/files/1/0440/5451/1766/files/xefarazo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9868/6119/files/18681981548.pdf
    • https://cdn.shopify.com/s/files/1/0431/7223/3380/files/brooks_brothers_milano_fit_size_guide.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_off00005720.bin
4343ebfc3709a33c3a4221b1189a4647f6741836b0ed0c5c84f954840cd37e41		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5720 5280 bytes
font_01_sfnt_off000068e7.bin
30d4073878ae36fb31792e9e0d32a88f8eb9b80481801e949981ec51225fd31a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x68E7 10912 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.