Malicious PDF — malware analysis report

Static analysis result for SHA-256 30aac663e9acf56e…

MALICIOUS

PDF

41.7 KB Created: 2020-08-29 18:23:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a91a8541f949f253cd8b7dc777c2a2e9 SHA-1: d00e844128c71113fb1aabadd22802d433fd2e43 SHA-256: 30aac663e9acf56e98dea05e1b98cc0fb638da6240fbc6854207aeae90998b81
150 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, which is designed to lure users to malicious content. The document body, though heavily obfuscated, appears to contain the same title as the malicious URL, suggesting a social engineering pretext. The presence of numerous links to static.usrfiles.com, while individually benign, contributes to a link farm pattern, further indicating malicious intent.

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.cc/wix?keyword=definicion+de+objetivo+en+administracion+segun+autores
    • https://static.usrfiles.com/ugd/b8c837_39e6caa1872b43a28dbce8683b806f40.pdf
    • https://static.usrfiles.com/ugd/b8c837_0e31703808bf4874b7dd69aadd26b9a4.pdf
    • https://static.usrfiles.com/ugd/b8c837_1ce3fa0bcc4a4e9384b5cdd3b24dc632.pdf
    • https://static.usrfiles.com/ugd/b8c837_9eace22d32914984a2f7a99007a56742.pdf
    • https://static.usrfiles.com/ugd/b8c837_249d48c19f4e44d79ddff24efe81c97d.pdf
    • https://static.usrfiles.com/ugd/b8c837_f2933df0f45a4e1c93f0ae2af8fecf26.pdf
    • https://static.usrfiles.com/ugd/b8c837_fd518353262340a5935270e5658c08b8.pdf
    • https://static.usrfiles.com/ugd/6cf392_bc2f5ec483f645aea5fd85020b406d36.pdf
    • https://static.usrfiles.com/ugd/10e3af_6e5022c195e84b08af8850d3c5cd5094.pdf
    • https://static.usrfiles.com/ugd/24853a_a7995544ed3242a491dde4017639eb33.pdf
    • https://static.usrfiles.com/ugd/b8c837_715346d638d14508a09eaaf21faff564.pdf
    • https://static.usrfiles.com/ugd/b8c837_0c052dd22033403d92fd96ad1b82e58d.pdf
    • https://static.usrfiles.com/ugd/b8c837_9a29c14bffb44ce28fe3157b1f5f3a50.pdf
    • https://cdn.shopify.com/s/files/1/0428/1348/9318/files/biodiesel_production_journals.pdf
    • https://cdn.shopify.com/s/files/1/0433/4669/0203/files/dafakeposonorarurad.pdf
    • https://cdn.shopify.com/s/files/1/0434/3074/0135/files/47737971276.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_off000061d9.bin
9dc4b6efafb62e374ac7c724713cb1ef78f523de33cc94bb7e105e7b4387a205		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61D9 5584 bytes
font_01_sfnt_off000074c9.bin
7a9a63a7f6ea342686bb0562e29a6df14ed8e756581006351d6ff4741b7a1697		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74C9 10792 bytes

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