Malicious PDF — malware analysis report

Static analysis result for SHA-256 266d9947d27255bf…

MALICIOUS

PDF

48.3 KB Created: 2021-06-04 04:09:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 10327f072678722c400fe6c86ee077f1 SHA-1: 6cabd50b6aeb2815fcb3df22a3c6b67e986d35b4 SHA-256: 266d9947d27255bfa5117666cb87cf5fff088f0f19eeba38834f17d331a8f0c4
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically promoting 'free generator / game hack' lures. The primary URL, https://netcdn.online/app/431946152/can-u-get-free-robux-game-hack, is a clear indicator of a phishing or scam attempt. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly suggest a malicious redirector workflow designed to lead users to potentially harmful content or further phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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.online/app/431946152/can-u-get-free-robux-game-hack In PDF document text
    • http://katalog.gemalibrary.net/repository/coin-master-hack-app_GM406889139.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/coin-master-free-spins-links-app_GM406889139.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/how-to-download-minecraft-for-free-on-iphone_GM479516143.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/roblox-2021-hack_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/apps-for-free-robux_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/hack-coin-master-apk-download_GM406889139.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/how-to-get-free-robux-games_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/how-to-get-free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/coin-master-tool-hack_GM406889139.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/free-25-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/roblox-18_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/roblox-free-rubox_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/how-to-get-stuff-that-cost-coins-free-mcpe-master_GM406889139.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/free-robux-roblox-promo-codes_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/haktuts-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/optifine-mcpe_GM479516143.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/coin-master-free-spins-link-iphone_GM406889139.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/is-minecraft-education-edition-free_GM479516143.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/open-coin-master_GM406889139.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_004_off0000529a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x529A 26404 bytes
SHA-256: 90b74e3e90f12412c1bc95ef9c178b6f6aced860fea740cce1fb1319fc5a15f2
font_01_sfnt_off00008f7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F7F 2844 bytes
SHA-256: d4efd49219a7ff6424c923a6ccef5b7e1750ded18bbd79546f2ad196ddc76c43
font_02_sfnt_off0000993f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x993F 18532 bytes
SHA-256: 35bb0f01f69d1b5e790ed5f4c0eeb98998139975dc1eb58b588dc01b9002bbc1

Open this report in the interactive analyzer, or submit your own file for analysis.