Malicious PDF — malware analysis report

Static analysis result for SHA-256 5676a462d52195f2…

MALICIOUS

PDF

46.3 KB Created: 2021-06-09 03:08:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 46b9196ce584784267fb13fde598862f SHA-1: 7c6cd98e4b006c72fd145b1f25173e8229552890 SHA-256: 5676a462d52195f2937526e0ca079223b2f554c061eec8d080e8d56f07a8de86
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'game hacks' and 'free Robux'. The ML classifier strongly flagged this PDF as malicious, and heuristic rules indicate it's designed as a redirector lure. While no scripts were explicitly extracted, the embedded URLs and the nature of the lure suggest an attempt to lead the user to a site that likely hosts further malicious content or exploits.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

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-glitch-to-get-free-robux-game-hack In PDF document text
    • https://wandpiraten.de/images/free-robux-android_GM431946152.pdfIn PDF document text
    • https://wandpiraten.de/images/google-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://wandpiraten.de/images/coin-master-reward-link-2021_GM406889139.pdfIn PDF document text
    • https://wandpiraten.de/images/tryrbx-site-free-robux_GM431946152.pdfIn PDF document text
    • https://wandpiraten.de/images/coin-master-free-spins-and-free-coins_GM406889139.pdfIn PDF document text
    • https://wandpiraten.de/images/how-do-you-get-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://wandpiraten.de/images/lastrick-com-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://wandpiraten.de/images/twitter-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://wandpiraten.de/images/robux-giver_GM431946152.pdfIn PDF document text
    • https://wandpiraten.de/images/coin-master-spin-link-2021_GM406889139.pdfIn PDF document text
    • https://wandpiraten.de/images/how-to-get-free-hair-in-roblox_GM431946152.pdfIn PDF document text
    • https://wandpiraten.de/images/minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • https://wandpiraten.de/images/free-robux-discord_GM431946152.pdfIn PDF document text
    • https://wandpiraten.de/images/how-to-get-free-robux-gift-cards_GM431946152.pdfIn PDF document text
    • https://wandpiraten.de/images/http-coin-master-hack-club_GM406889139.pdfIn PDF document text
    • https://wandpiraten.de/images/how-to-install-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://wandpiraten.de/images/how-do-i-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://wandpiraten.de/images/play-full-version-of-minecraft-for-free-no-download_GM479516143.pdfIn PDF document text
    • https://wandpiraten.de/images/roblox-com-free_GM431946152.pdfIn PDF document text
    • https://wandpiraten.de/images/how-you-get-free-robux_GM431946152.pdfIn PDF document text
    • https://discordIn 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_off00004faa.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4FAA 28948 bytes
SHA-256: 851b332bdec9048826fbafc9cf60b3ffd495845b1117233a3f5fd3b183a38986
font_01_sfnt_off00009211.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9211 18476 bytes
SHA-256: bfb8d03c4f09053c36b0efeddd584c225dcee41397c0e2fd6b4b04ad1aa9fa6a

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