Malicious PDF — malware analysis report

Static analysis result for SHA-256 14635dd0127db6ea…

MALICIOUS

PDF

34.5 KB Created: 2021-06-26 21:01:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 3d2958a6c0c8ffbfc19d5872c21d3034 SHA-1: fad8ad132caf4e1165880a1948a179623e9f34e3 SHA-256: 14635dd0127db6ea97f2a5b9f97ffd43bb535dc3b5fadf8e9739c366ee16e1ff
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains multiple links to known malicious redirectors and lures users with promises of game hacks and free currency. The ML classifier strongly indicates maliciousness. The document body and embedded URLs suggest a social engineering attack aimed at tricking users into visiting potentially harmful websites.

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/how-to-change-your-roblox-username-free-game-hack In PDF document text
    • http://lib.smklabor.sch.id/repository/coin-master-hack-https-coinms-net_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-robux-generator-codes_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/a-person-hacked-roblox-for-sex_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-robux-ocobef-2021_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/robux-tampermonkey-hack_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/how-to-get-free-robux-september-2021_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/coin-master-hack-apk-2021_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/robux-hack-engine_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/coin-master-daily-free-spins-link-today-twitter_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/coin-master-fan-page-giveaway_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/coin-master-free-spins-2021-ios_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-robux-generator-no-survey-2021_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/how-to-become-a-roblox-hacker-free_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/fighting-free-card-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-robux-no-offers_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/hackaron-roblox-hack-link_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/roblox-adopt-me-money-hack-2021-script_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_off000030bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30BD 21720 bytes
SHA-256: d1db66c16d21e9db9912ce6aaad8fd83ba2b51333855df104ae5c952d8aeae09
font_01_sfnt_off0000605d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x605D 19540 bytes
SHA-256: 931b08b03ca54b31686306823cbaeb68bb9b2d4519394e74376e5a024d3c9af4

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