Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c23e728557cf0f3…

MALICIOUS

PDF

42.1 KB Created: 2021-05-18 05:42:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 917784687383f80d9bc6dd5dc26116b1 SHA-1: 00df62cd69162aff0eea28a604be6a53195e21ff SHA-256: 3c23e728557cf0f3a842579dd6eecdec2e226ebf65c6c2272bb1feff45bc426d
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 a 'Coin Master Daily Free Spins Link Haktuts' lure. The presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent to direct users to potentially harmful content. No scripts were extracted, but the document's structure and embedded links strongly suggest a phishing or scam attempt.

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-daily-free-spins-link-haktuts-game-hack In PDF document text
    • http://bijbelreizenisrael.nl/images/how-to-get-minecraft-bedrock-edition-on-pc-for-free_GM479516143.pdfIn PDF document text
    • http://bijbelreizenisrael.nl/images/coin-master-free-blogspot_GM406889139.pdfIn PDF document text
    • http://bijbelreizenisrael.nl/images/coin-master-free-spins-usa-2021_GM406889139.pdfIn PDF document text
    • http://bijbelreizenisrael.nl/images/coin-master-daily-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://bijbelreizenisrael.nl/images/free-coin-coin-master_GM406889139.pdfIn PDF document text
    • http://bijbelreizenisrael.nl/images/hack-coin-master-download-ios_GM406889139.pdfIn PDF document text
    • http://bijbelreizenisrael.nl/images/hack-coin-master-game_GM406889139.pdfIn PDF document text
    • http://bijbelreizenisrael.nl/images/how-to-make-roblox-clothes-for-free_GM431946152.pdfIn PDF document text
    • http://bijbelreizenisrael.nl/images/flip-master-coins-hack_GM406889139.pdfIn PDF document text
    • http://bijbelreizenisrael.nl/images/robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://bijbelreizenisrael.nl/images/generator-robux_GM431946152.pdfIn PDF document text
    • http://bijbelreizenisrael.nl/images/roblox-hack_GM431946152.pdfIn PDF document text
    • http://bijbelreizenisrael.nl/images/synapse-roblox-free-download_GM431946152.pdfIn PDF document text
    • http://bijbelreizenisrael.nl/images/coin-master-hack-mod-apk-35-8_GM406889139.pdfIn PDF document text
    • http://bijbelreizenisrael.nl/images/how-to-free-robux_GM431946152.pdfIn PDF document text
    • http://bijbelreizenisrael.nl/images/coin-master-no-download-app-but-play-for-free_GM406889139.pdfIn PDF document text
    • http://bijbelreizenisrael.nl/images/windows-10-minecraft-free-with-java_GM479516143.pdfIn PDF document text
    • http://bijbelreizenisrael.nl/images/coin-master-hack-without-verification-site-zyngaplayerforumscom_GM406889139.pdfIn PDF document text
    • http://bijbelreizenisrael.nl/images/roblox-script-hack_GM431946152.pdfIn PDF document text
    • http://bijbelreizenisrael.nl/images/60-free-spins-on-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_off00004868.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4868 24572 bytes
SHA-256: b9000959ceefaea49c9b6da3b9660fe1a939102594b814890c521be3afc0508f
font_01_sfnt_off00008140.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8140 18620 bytes
SHA-256: b3c31be8a1333c3d9df8c736a52b75e17047f38808bb656eb58e4e4bec5e9b22

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