Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d720c6be076bf29…

MALICIOUS

PDF

44.2 KB Created: 2021-06-03 07:43:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b402ce388b3d2ef18ff0864604f2264d SHA-1: 9fd4b83ccbb45a7a6d29ab2fa9918a2334572f5c SHA-256: 5d720c6be076bf2968ccbe7301e3d625cde7c435cdb91822a167a092952644b4
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains an embedded URI pointing to a "coin-master-hack-apk" download, suggesting a lure for users to obtain a potentially malicious application. The ML classifier strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the lure indicate a phishing or social engineering attempt, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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/406889139/coin-master-hack-apk-iphone-game-hack In PDF document text
    • http://slims.abulyatama.ac.id/repository/free-foxy-food-coin-master_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/how-to-get-free-pet-food-in-coin-master_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/free-robux-com-roblox_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/free-roblox-account-generator_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/roblox-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/free-robux-now_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/free-robux-games-that-actually-work_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/minecraft-online-free-download_GM479516143.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/roblox-hack-site_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/lazyblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/coin-master-hack-version-download-2021_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/robux-generator-that-works_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/plug-toolbox-for-minecraft-free-ios_GM479516143.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/coin-master-free-spins-link-whatsapp-group_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/roblox-mobile-hack_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/free-unlimited-coin-master-online-tool_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/is-roblox-free-on-xbox_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/hacked-roblox-accounts-list_GM431946152.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_004_off0000513b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x513B 25288 bytes
SHA-256: 119351ee046bbc5cbe04237df7b0bf76dc3e2103dc5c092dae7beac2080af8c9
font_01_sfnt_off00008ae5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AE5 18060 bytes
SHA-256: 639b29b672cbc71240036f13b92c48af60df51001630b17541f0bd34647b9b95

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