Malicious PDF — malware analysis report

Static analysis result for SHA-256 304a3479c0b9c926…

MALICIOUS

PDF

38.6 KB Created: 2020-09-01 02:55:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9ea5a33c98f223effdcdb59577d9265f SHA-1: eb6a9884856b4ab42b73200cc14003cf368bbedc SHA-256: 304a3479c0b9c9269c39dceaddf83d25d4c81314d93888ff924a7ff8c2168a72
68 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'ttraff.ru'. The document body, though heavily obfuscated, also contains this URL and text suggesting a flyer template, combined with a visual cue for a download button. This indicates a social engineering attempt to trick the user into visiting a malicious URL, likely 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.
  • 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.ru/wix?keyword=beef+and+beer+fundraiser+flyer+template
    • https://static.usrfiles.com/ugd/b8c837_2fd757cb0e90442f996a960c16712c9d.pdf
    • https://static.usrfiles.com/ugd/c7ef1a_fd22271e05b74d71aad8a0eecf0d742d.pdf
    • https://static.usrfiles.com/ugd/b8c837_50f6211c317440199d0a1933d8024b7f.pdf
    • https://static.usrfiles.com/ugd/99a8f2_c2ee0bfc2f6945bf8988ff6dd286adf2.pdf
    • https://static.usrfiles.com/ugd/963627_85f448c3d0aa403b94d691c69cfca0fd.pdf
    • https://static.usrfiles.com/ugd/b8c837_57f863d9bab34c468be7b9f1bb901095.pdf
    • https://static.usrfiles.com/ugd/b8c837_ba37692eedc2455980b197acf049d265.pdf
    • https://cdn.shopify.com/s/files/1/0434/9899/5878/files/xijuxenuwupumiluloj.pdf
    • https://cdn.shopify.com/s/files/1/0434/9739/0244/files/robugojuk.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_off000058bd.bin
0f836a0b6497a6d171a2911d45ed37a7bc26c8dceaf64f2cf5e900570a6ba441		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58BD 5480 bytes
font_01_sfnt_off00006b4d.bin
df5dc17e200438d1a0728b722ef7c83330f40863a579986aae74a556784a5fb8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B4D 10136 bytes

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