Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5a5e94484536561…

MALICIOUS

PDF

61.2 KB Created: 2020-09-05 15:13:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b715cb5e017df3bd59994b1254a8ffa8 SHA-1: 151ea31f4ab35207a99f57b57cc5c3d80d010144 SHA-256: f5a5e9448453656172bba280c09ccb6a351817995c8d7caa1028c3331b2e5ba7
150 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it directs users to a known malicious URL. Additionally, the PDF_SEO_LINK_FARM heuristic suggests a large number of outbound links, many of which are likely malicious. The embedded URL, 'https://ttraff.club/wix?keyword=warlock+destruction+pvp+guide', is presented as a lure for a 'Warlock destruction pvp guide', likely to entice users to click through to a malicious site.

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.club/wix?keyword=warlock+destruction+pvp+guide
    • https://cdn.shopify.com/s/files/1/0437/9780/7265/files/zixamo.pdf
    • https://cdn.shopify.com/s/files/1/0437/8204/5853/files/chronology_of_events_in_indian_history.pdf
    • https://cdn.shopify.com/s/files/1/0431/2599/7722/files/ravigidusakexugokana.pdf
    • https://static.usrfiles.com/ugd/2b25e8_7bf41cbd51214478a0ed9d0a8ec8e394.pdf
    • https://static.usrfiles.com/ugd/4cd51e_d833e50c5dda404d83c077e1bb7aad8e.pdf
    • https://static.usrfiles.com/ugd/92ee2b_18b29776584b4fb2baebad385e959a95.pdf
    • https://static.usrfiles.com/ugd/8716ab_0aef79c444fc462c9a9f9bef95861562.pdf
    • https://static.usrfiles.com/ugd/3be3a7_60ca3911b98f4089aacf43a2dbb54d66.pdf
    • https://static.usrfiles.com/ugd/594ae5_107c41a74d034dd09b9fb4e041e22a24.pdf
    • https://cdn.shopify.com/s/files/1/0432/4478/1735/files/2403984711.pdf
    • https://cdn.shopify.com/s/files/1/0429/5108/2143/files/48596905650.pdf
    • https://cdn.shopify.com/s/files/1/0433/9934/8389/files/38251078147.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_off0000b2e8.bin
1930420e4a477e4661b84fc8d41707c7fde43d6f56dbc7da0b52b513a07cf3a3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB2E8 5380 bytes
font_01_sfnt_off0000c555.bin
da4591e90fd0a5f21a823d5a2c049e4e87c22a61968488e86a16df08e1583557		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC555 10140 bytes

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