Malicious PDF — malware analysis report

Static analysis result for SHA-256 4bcc5b6f390dc66b…

MALICIOUS

PDF

42.8 KB Created: 2021-05-20 02:10:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: de57f6f0b55d53fef496158cc3e27d13 SHA-1: 05c3b3d2f764c724d123dbefbdf502eca7831a6e SHA-256: 4bcc5b6f390dc66bf3d6e677e3dc6399cf0c9778a5daf8edd2c95ab2f06f5cb2
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links, one of which, 'https://netcdn.xyz/app/406889139/coin-master-hack-mod-apk-free-download-game-hack', is identified as a malicious redirector. The document body and heuristics indicate a lure for game hacks, suggesting a social engineering tactic to drive users to potentially malicious sites. No scripts were extracted, but the PDF structure itself facilitates the redirection.

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-hack-mod-apk-free-download-game-hack In PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-roblox-shirt-templates_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/minecraft-hacks-list_GM479516143.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/krnl-download_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/play-roblox-for-free-on-google_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-hack-ios-without-verification_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-free-attack_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/minecraft-bedrock-hacks-windows-10_GM479516143.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-free-spins-link-no-verification_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-coin-master-s_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-dominus-roblox_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-hack-someones-minecraft-account_GM479516143.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/robuxlove-net-free-robux_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/daily-spin-and-coin_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-free-soins_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/60-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-get-free-robux-without-verifying_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/create-minecraft-server-free_GM479516143.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/master-8-ball-pool-free-coins_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/is-tiktok-free-to-download_GM835599320.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_off00004c34.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C34 24988 bytes
SHA-256: b4e61183c7ddb1e96d56c8d0ef8a517e8c329393feb5eb243f5c2178a8606648
font_01_sfnt_off00008424.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8424 18636 bytes
SHA-256: f35a088bb389889b7dbdb2955ea981e64c4ac43926c2f49735e1909520ee0b52

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