Malicious PDF — malware analysis report

Static analysis result for SHA-256 bde3e67d33f365b4…

MALICIOUS

PDF

43.1 KB Created: 2021-04-25 14:14:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: bdb32555744cefbbe47bc8aa76fda0a4 SHA-1: bcd345e9b3a2a5293f83f47a80b00b790ed5244d SHA-256: bde3e67d33f365b4b0369a7ac61dba37fffcd8e252e078e27c6d40b5c613f879
168 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and lures users with promises of free Robux and game hacks. The document body, though partially corrupted, contains text related to these lures and the malicious URL. The heuristics indicate the PDF is designed to redirect users to malicious infrastructure, likely for further exploitation or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9855

Heuristics 5

  • PDF links to a 'free generator / game hack' redirector critical PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://netcdn.xyz/app/431946152/free-robux-pastebin-code-game-hack In PDF document text
    • https://lib.stie-yai.ac.id/repository/hack-t-shirt-roblox.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/how-do-you-get-free-robux-easy-way.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/hack-my-roblox-account-freee-no-downloads.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/roblox-royalty-free-music.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/free-rare-name-generator-roblox.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/how-to-get-free-robux-hack-on-tablet.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/free-robux-download-tool.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/ads-for-roblox-games-free.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/hacking-brothers-roblox-account.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/numeros-de-roblox-hacker.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00003e65.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3E65 26524 bytes
SHA-256: e0d8f65e719727ad7e3ded8d9598f087aadbd96e9b645f8a934d0d677c36bb4f
font_01_sfnt_off00007b20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B20 2844 bytes
SHA-256: baad2f3f6808f4af03fa9398e38c580c8d846f7f773a947d8cc1f39b2753d31a
font_02_sfnt_off000084e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84E2 18796 bytes
SHA-256: d4af864da08ac64b0746a9e6b213e82a1c6a21fd5e50b872a9a56c4e69853957

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