Malicious PDF — malware analysis report

Static analysis result for SHA-256 746295e2dd7d139d…

MALICIOUS

PDF

45.0 KB Created: 2021-06-11 06:56:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 476964e73b06d640d9256541209d848e SHA-1: 79285449f049e49d60ae5b33b81994ae4d81bcf4 SHA-256: 746295e2dd7d139d3a57c108cfd4d765da84a628cc6ef9e0403a16e352d9641f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically promoting 'game hacks' and 'free generators' as a lure. The primary redirect URL is https://netcdn.tw/app/431946152/roblox-cheat-codes-2021-game-hack. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate malicious redirection, likely intended to lead users to phishing sites or download further malware. The document body itself is heavily obfuscated and contains embedded URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

Heuristics 4

  • 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.
  • 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.tw/app/431946152/roblox-cheat-codes-2021-game-hack In PDF document text
    • http://amcoeur.org/images/free-draw-alpha-roblox_GM431946152.pdfIn PDF document text
    • http://amcoeur.org/images/tiktok-free-movies_GM835599320.pdfIn PDF document text
    • http://amcoeur.org/images/minecraft-free-download-android_GM479516143.pdfIn PDF document text
    • http://amcoeur.org/images/is-minecraft-bedrock-edition-free_GM479516143.pdfIn PDF document text
    • http://amcoeur.org/images/roblox-studio-free-robux_GM431946152.pdfIn PDF document text
    • http://amcoeur.org/images/roblox-hack-2021_GM431946152.pdfIn PDF document text
    • http://amcoeur.org/images/mine-minecraft-games-for-free_GM479516143.pdfIn PDF document text
    • http://amcoeur.org/images/coin-master-hack-https-coinms-net_GM406889139.pdfIn PDF document text
    • http://amcoeur.org/images/free-robux-no-human-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://amcoeur.org/images/how-to-play-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • http://amcoeur.org/images/how-to-hack-a-minecraft-server_GM479516143.pdfIn PDF document text
    • http://amcoeur.org/images/hack-roblox-with-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://amcoeur.org/images/how-to-get-minecraft-bedrock-edition-for-free_GM479516143.pdfIn PDF document text
    • http://amcoeur.org/images/master-coin-free-spin_GM406889139.pdfIn PDF document text
    • http://amcoeur.org/images/hack-para-ninja-assassin-roblox_GM431946152.pdfIn PDF document text
    • http://amcoeur.org/images/minecraft-for-chromebook-free_GM479516143.pdfIn PDF document text
    • http://amcoeur.org/images/microsoft-free-robux_GM431946152.pdfIn PDF document text
    • http://amcoeur.org/images/roblox-premium-hack_GM431946152.pdfIn PDF document text
    • http://amcoeur.org/images/roblox-free-noob-outfits_GM431946152.pdfIn PDF document text
    • http://amcoeur.org/images/minecraft-apk-free-download_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005050.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5050 25532 bytes
SHA-256: 4957d08ee3f9f3f289efac7f92194996f22868a91a971695cc4af323283327da
font_01_sfnt_off00008b7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B7F 18856 bytes
SHA-256: 551401c5ca804dcd1526ae36940cfa9d37be66a66bdf88ac93296b0d1c09dc14

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