Malicious PDF — malware analysis report

Static analysis result for SHA-256 c743eea75eee53af…

MALICIOUS

PDF

33.9 KB Created: 2021-06-19 05:57:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 2994e9ddebf096248ff8a5f17ca3b092 SHA-1: c6727702d374e91c52e8c3974f41a587539a8acf SHA-256: c743eea75eee53af4714f828b485b60a3dec2cff0ddee34cf5bfb8fae49efbfe
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to external websites, including a known malicious redirector at http://netcdn.co/app/431946152/does-roblox-have-free-snakes-game-hack. The document body and extracted URLs suggest a lure for game-related cheats or scams, aiming to trick users into visiting potentially harmful sites. The presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent to redirect users to malicious infrastructure.

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/431946152/does-roblox-have-free-snakes-game-hack In PDF document text
    • http://elibrary.smknesbu.sch.id/repository/free-robux-scam_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/coin-master-new-link-free-spin_GM406889139.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/get-free-gold-cards-in-coin-master_GM406889139.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/coin-master-hack-software_GM406889139.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/free-coin-master-gifts_GM406889139.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/how-to-hack-coin-master-ios-no-jailbreak_GM406889139.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/checkmein-roblox-free_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/how-to-get-free-hair-modles-roblox_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/113-hacked-client_GM479516143.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/minecraft-thumbnail-maker-free_GM479516143.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/free-roblox-cards-pin-number_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/coin-master-hack-https-coinms-net_GM406889139.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/roblox-hack-download_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/coin-master-free-spins-link-2021-iphone_GM406889139.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/free-minecraft-mods-for-pc_GM479516143.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/free-coin-master-spins-daily_GM406889139.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/robux-hack-2021-android_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/get-free-tiktok-likes_GM835599320.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/how-to-hack-your-self-getting-free-robux_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
font_00_sfnt_off00002d6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D6A 22440 bytes
SHA-256: ba0863f583152ffca964ea107570aeb2e0dfbe28a7f1cb41f7374316f1d02b92
font_01_sfnt_off00005f54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F54 19100 bytes
SHA-256: 712fee0974c13230a3014d58d440fbae2c9464bd36b8291609febeb44ae0cdf7

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