Malicious PDF — malware analysis report

Static analysis result for SHA-256 9bf3d11305a0a62d…

MALICIOUS

PDF

35.5 KB Created: 2021-06-22 17:30:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: bd14c405250c7d4ae28288a854e30c2d SHA-1: 5069f7d873ba0be7d75c5ecb1b6bf9da27ebba85 SHA-256: 9bf3d11305a0a62de916cdbf8495e7ea14e86659a830f1a56256e02f126d4265
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting game hacks and generators for popular games like Roblox and Minecraft. The primary lure URL is http://netcdn.co/app/431946152/roblox-dll-hack-2021-game-hack, which is flagged as malicious. The document body and embedded URLs suggest a social engineering tactic to trick users into downloading potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/roblox-dll-hack-2021-game-hack In PDF document text
    • https://diendientuvn.com/public/upload/files/how-to-hack-breaking-point-roblox_GM431946152.pdfIn PDF document text
    • https://diendientuvn.com/public/upload/files/hacked-roblox-game_GM431946152.pdfIn PDF document text
    • https://diendientuvn.com/public/upload/files/minecraft-building-hacks_GM479516143.pdfIn PDF document text
    • https://diendientuvn.com/public/upload/files/how-to-get-free-obc-on-roblox-test-site_GM431946152.pdfIn PDF document text
    • https://diendientuvn.com/public/upload/files/lazyblox-com-free-robux_GM431946152.pdfIn PDF document text
    • https://diendientuvn.com/public/upload/files/minecraft-free-ios_GM479516143.pdfIn PDF document text
    • https://diendientuvn.com/public/upload/files/free-coin-master-spins-daily_GM406889139.pdfIn PDF document text
    • https://diendientuvn.com/public/upload/files/roblox-free-r_GM431946152.pdfIn PDF document text
    • https://diendientuvn.com/public/upload/files/robux-free-co_GM431946152.pdfIn PDF document text
    • https://diendientuvn.com/public/upload/files/coin-master-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • https://diendientuvn.com/public/upload/files/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://diendientuvn.com/public/upload/files/coin-master-claim-free-spins_GM406889139.pdfIn PDF document text
    • https://diendientuvn.com/public/upload/files/minecraft-dungeons-free-download-pc_GM479516143.pdfIn PDF document text
    • https://diendientuvn.com/public/upload/files/how-to-get-minecraft-for-free-on-android-device_GM479516143.pdfIn PDF document text
    • https://diendientuvn.com/public/upload/files/play-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • https://diendientuvn.com/public/upload/files/free-cracked-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • https://diendientuvn.com/public/upload/files/free-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • https://diendientuvn.com/public/upload/files/free-roblox-glasses_GM431946152.pdfIn PDF document text
    • https://diendientuvn.com/public/upload/files/coin-master-hack-game-download_GM406889139.pdfIn PDF document text
    • https://diendientuvn.com/public/upload/files/minecraft-free-computer-game_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
font_00_sfnt_off0000322a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x322A 22776 bytes
SHA-256: e30105b5ab561bb48c5357bf17b4b5ad11dfe09fd7084cbabc1433fa1665a5a4
font_01_sfnt_off00006510.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6510 19228 bytes
SHA-256: 33b881307e8037977e462af567b26b0e99aa62d07a73c75fc388dc507d656f1e

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