Malicious PDF — malware analysis report

Static analysis result for SHA-256 38ee0d101acc1b63…

MALICIOUS

PDF

35.0 KB Created: 2021-06-30 19:19:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 3c3499b43f220d9c3c5e654c34f54e9a SHA-1: d213796227fd75dbe0b429319e8d861cb8942c1a SHA-256: 38ee0d101acc1b63d0b9b37a0ff596c83876d73dfa270838dd9bca072499ea40
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links, including one identified as a malicious redirector. The document body and heuristics indicate a lure for 'free generators' or 'game hacks', specifically mentioning 'Coin Master'. The primary link directs to http://netcdn.co/app/406889139/haktuts-coin-master-free-spins-game-hack, which is flagged as malicious. This suggests the document is designed to trick users into visiting potentially harmful sites.

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/406889139/haktuts-coin-master-free-spins-game-hack In PDF document text
    • https://www.kontraktorjogjadiy.com/ckfinder/userfiles/files/free-coin-master-spin-app_GM406889139.pdfIn PDF document text
    • https://www.kontraktorjogjadiy.com/ckfinder/userfiles/files/how-to-download-minecraft-for-free-on-mac_GM479516143.pdfIn PDF document text
    • https://www.kontraktorjogjadiy.com/ckfinder/userfiles/files/roblox-gift-card-free-codes_GM431946152.pdfIn PDF document text
    • https://www.kontraktorjogjadiy.com/ckfinder/userfiles/files/60-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.kontraktorjogjadiy.com/ckfinder/userfiles/files/free-coins-and-spins-link-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.kontraktorjogjadiy.com/ckfinder/userfiles/files/coin-master-download_GM406889139.pdfIn PDF document text
    • https://www.kontraktorjogjadiy.com/ckfinder/userfiles/files/minecraft-windows-10-edition-hacked-client_GM479516143.pdfIn PDF document text
    • https://www.kontraktorjogjadiy.com/ckfinder/userfiles/files/free-robux-cards_GM431946152.pdfIn PDF document text
    • https://www.kontraktorjogjadiy.com/ckfinder/userfiles/files/free-minecraft-survival-server_GM479516143.pdfIn PDF document text
    • https://www.kontraktorjogjadiy.com/ckfinder/userfiles/files/legit-coin-master-hack-site-zyngaplayerforumscom_GM406889139.pdfIn PDF document text
    • https://www.kontraktorjogjadiy.com/ckfinder/userfiles/files/free-robux-no-verification-2021-android_GM431946152.pdfIn PDF document text
    • https://www.kontraktorjogjadiy.com/ckfinder/userfiles/files/coin-master-daily-free-spins-link-haktuts_GM406889139.pdfIn PDF document text
    • https://www.kontraktorjogjadiy.com/ckfinder/userfiles/files/coin-master-generator-hack_GM406889139.pdfIn PDF document text
    • https://www.kontraktorjogjadiy.com/ckfinder/userfiles/files/coin-master-invite-friends-free-spins_GM406889139.pdfIn PDF document text
    • https://www.kontraktorjogjadiy.com/ckfinder/userfiles/files/minecraft-free-minecraft_GM479516143.pdfIn PDF document text
    • https://www.kontraktorjogjadiy.com/ckfinder/userfiles/files/minecraft-fly-hack_GM479516143.pdfIn PDF document text
    • https://www.kontraktorjogjadiy.com/ckfinder/userfiles/files/no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.kontraktorjogjadiy.com/ckfinder/userfiles/files/apps-for-free-robux_GM431946152.pdfIn PDF document text
    • https://www.kontraktorjogjadiy.com/ckfinder/userfiles/files/coin-master-rare-cards-hack_GM406889139.pdfIn PDF document text
    • https://www.kontraktorjogjadiy.com/ckfinder/userfiles/files/links-for-free-spins-for-coin-master_GM406889139.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_off0000329d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x329D 22736 bytes
SHA-256: 4828ca3c50915526505b51349a7d9c17c99f51b3bfdaf4975e80997fa8724cc1
font_01_sfnt_off00006594.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6594 18484 bytes
SHA-256: d9a037a653ed28116979e3af0bb76bb4d7eaba1060cd405c4d4ff8bdf95a3337

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