Malicious PDF — malware analysis report

Static analysis result for SHA-256 8baefbf66a7b3bc7…

MALICIOUS

PDF

41.6 KB Created: 2021-05-19 00:05:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 63d3b1969e3ae4d1a3047459fe7cc24a SHA-1: 6c1b673ecb6aef69f409192c7998c8162b2c0551 SHA-256: 8baefbf66a7b3bc7dc1a6783a3802661dcf0040afb3b8c87e9846e961ec7d11a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links designed to lure users into clicking on what appear to be game-related cheats or generators. These links redirect to known malicious infrastructure, indicating a phishing or scam attempt. The presence of embedded URLs and the ML classifier's high confidence score support this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.xyz/app/406889139/coin-master-links-free-spins-game-hack In PDF document text
    • http://www.boic.nl/images/coin-master-daily-gift-free-spins-and-coins-link_GM406889139.pdfIn PDF document text
    • http://www.boic.nl/images/minecraft-free-download-android_GM479516143.pdfIn PDF document text
    • http://www.boic.nl/images/how-to-scam-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.boic.nl/images/free-coin-master-spin-and-coin-link_GM406889139.pdfIn PDF document text
    • http://www.boic.nl/images/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://www.boic.nl/images/hacks-master-coin_GM406889139.pdfIn PDF document text
    • http://www.boic.nl/images/free-roblox-pin-codes_GM431946152.pdfIn PDF document text
    • http://www.boic.nl/images/how-to-download-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://www.boic.nl/images/free-robux-obby_GM431946152.pdfIn PDF document text
    • http://www.boic.nl/images/how-to-get-free-spins-and-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.boic.nl/images/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.boic.nl/images/free-robux-obby-2021_GM431946152.pdfIn PDF document text
    • http://www.boic.nl/images/get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.boic.nl/images/moonactive-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://www.boic.nl/images/how-to-win-free-robux_GM431946152.pdfIn PDF document text
    • http://www.boic.nl/images/roblox-mobile-hack_GM431946152.pdfIn PDF document text
    • http://www.boic.nl/images/free-coin-and-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.boic.nl/images/how-to-get-free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
    • http://www.boic.nl/images/roblox-hacking-website_GM431946152.pdfIn PDF document text
    • http://www.boic.nl/images/minecraft-wurst-hacked-client_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_003_off00004944.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4944 24296 bytes
SHA-256: efe6684212cb1768c152becbe3a9fac04e258cd607823ff09a5238ad808492c8
font_01_sfnt_off000080f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80F0 18056 bytes
SHA-256: 95118de0f1fa2d9d8d6d34d7ce9f6e9c56d43c25fce4d2a4bd556d275959b9e0

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