Malicious PDF — malware analysis report

Static analysis result for SHA-256 e026ea97e2f7da56…

MALICIOUS

PDF

35.7 KB Created: 2021-07-05 00:18:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 077219b31612c386b6d539f6a7ea18d0 SHA-1: ad38a0662e89e4632f515790d41fe39bc4f131ec SHA-256: e026ea97e2f7da565e1b7b05a8620dda6cabdea0b002f9963dfc2862587f8944
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, specifically advertising "game hacks" and "generators" for popular games. The primary lure URL is http://netcdn.tw/app/406889139/cmaster-club-coin-master-hack-game-hack, which is designed to lead users to further malicious content. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the lures suggest a phishing or scam attempt, likely intended to deliver further malware or trick users into providing credentials.

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/cmaster-club-coin-master-hack-game-hack In PDF document text
    • http://pustaka.ust.ac.id/repository/coin-master-gold-cards-free_GM406889139.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/infinite-robux-hack-2021-sc_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/free-roblox-game-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/john-doe-roblox-hacker_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/robux-login-free_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/roblox-free-robux-generator-no-verification_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/google-how-can-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/free-roblox-money-codes-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/cool-aoutfits-for-free-in-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/free-level-9-exploit-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/free-roblox-hacks-net_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/roblox-free-not-to-download_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/how-to-get-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/nnuevo-hack-de-robux-20210_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/free-robux-100-not-fake-no-human-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/how-to-get-free-robux-in-1-minute-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/roblox-cheats-for-money-on-ipad_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/how-to-get-hacks-on-midieval-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/if-i-uninstall-minecraft-can-i-reinstall-it-for-free_GM479516143.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/hack-robar-cuentas-de-roblox-2021-akaka-pastebin_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_off000033fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33FA 23212 bytes
SHA-256: 0ebfee541c21610c5323ab188a4212577b7a031cfa46743a27723fc13642a4a8
font_01_sfnt_off00006821.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6821 18636 bytes
SHA-256: 0f9c6480fb97cb945c4f331957ca3e85df9cec17095eec008b0f064e7f1b18d4

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