Malicious PDF — malware analysis report

Static analysis result for SHA-256 836eb092b00c1dca…

MALICIOUS

PDF

44.7 KB Created: 2020-09-01 03:33:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f3f691e0d4e119783ff5791be6c9f42e SHA-1: ad0ec7880c86a274068973bb2497333b71871dc2 SHA-256: 836eb092b00c1dca761f971fa1f6d778f1994dc839f57fc7f517cd73f0afe597
128 Risk Score

Malware Insights

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

The PDF file contains a link that redirects to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains text related to a game guide and the malicious URL, suggesting a lure. The PDF_SEO_LINK_FARM heuristic indicates the PDF is part of a larger link farm, likely for SEO manipulation or distributing malicious links. No scripts were extracted from this sample.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.com/wix?keyword=galactic+civilizations+3+crusade+beginner+guide
    • https://static.usrfiles.com/ugd/913720_91436707fd4c407c80ee9507ca663f8b.pdf
    • https://static.usrfiles.com/ugd/b8c837_39e6caa1872b43a28dbce8683b806f40.pdf
    • https://static.usrfiles.com/ugd/3f80ec_7af23cbf85d246c8bcb74874d933f99e.pdf
    • https://static.usrfiles.com/ugd/e2c6c1_a6c96a77b83c4a8f92d96d27ad6d45df.pdf
    • https://static.usrfiles.com/ugd/12f4eb_06d8751a9cd540e48be6430f7037203c.pdf
    • https://cdn.shopify.com/s/files/1/0433/7047/9768/files/sesiv.pdf
    • https://cdn.shopify.com/s/files/1/0432/2790/6206/files/57735407311.pdf
    • https://cdn.shopify.com/s/files/1/0433/0684/4315/files/xowabewogorajeso.pdf
    • https://cdn.shopify.com/s/files/1/0470/8732/1246/files/encyclopdie_visuelle_des_plantes_sauvages.pdf
    • https://cdn.shopify.com/s/files/1/0430/3205/1873/files/54327791981.pdf
    • https://static.usrfiles.com/ugd/b85eb0_9f275c9e74194e4faf5e98165888a04d.pdf
    • https://static.usrfiles.com/ugd/d1d005_7fa29e4cf0d3473d9d821c06681cc2ca.pdf
    • https://static.usrfiles.com/ugd/b8c837_a9b326143fe24e86aca53f7e7acfd20c.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_off00006e72.bin
b3e887cdac12a9e2266d9f03c5272ac22965a59e2fbec2e05aa9f180cfc2ffc6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E72 5552 bytes
font_01_sfnt_off00008175.bin
b75435424a1c2140ec5de39e64304d75cd073b93b5016cd7464d771ccfd77e90		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8175 10720 bytes

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