Malicious PDF — malware analysis report

Static analysis result for SHA-256 6548126c9033c2a8…

MALICIOUS

PDF

33.9 KB Created: 2021-07-05 23:23:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 34d0b16fe5f6e73ad9261f72637b208d SHA-1: f20f1d7dc97aff4a563fad6b7caa5795d1196d00 SHA-256: 6548126c9033c2a8770a1d7b5ac3d39ef68afc20a07c742af77b16775fe2a051
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and lures users with promises of game hacks and free items. The primary malicious URL identified is http://netcdn.tw/app/406889139/coin-master-hack-https-coinms-net-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a phishing or malware distribution attempt, likely initiated via spearphishing attachment.

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.tw/app/406889139/coin-master-hack-https-coinms-net-game-hack In PDF document text
    • https://lib.bunghatta.ac.id/app/repository/roblox-jailbreak-free-money-generator_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-coin-and-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-roblox-chat-bypass_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/roblox-robux-hack-november-2021_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/roblox-free-hair-boy-2021_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-robux-generator-no-survey_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/all-might-roblox-free-shop-t-schirt_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/join-roblox-players-game-hack_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/how-to-do-a-roblox-hack_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/how-to-hack-somebodys-roblox-account-2021_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-robux-gift-card-numbers_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/how-to-use-speed-hack-cheat-engine-on-roblox_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/how-to-start-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-minecraft-skins-pe_GM479516143.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/how-to-get-minecraft-for-free-on-iphone-2021_GM479516143.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-account-roblox-2021_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-online-minecraft-server_GM479516143.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/lootbux-com-free-robux_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-annualy-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002f8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F8C 22352 bytes
SHA-256: 89e5a62226561382ece4c118cd2a7228001402d00aaccce52dc34a458e54eaa5
font_01_sfnt_off00006134.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6134 18440 bytes
SHA-256: d4a0ce670d7ff27a0341fb2a5bc1c8134718dc63ae2ec70999bf7230e535e219

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