Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ac2764b0cbf3c60…

MALICIOUS

PDF

36.0 KB Created: 2021-07-03 22:57:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 08fdad94997d96681d4ee9382871a418 SHA-1: 77cbb5bc148ef6e2d967d6b9c97c8cecb436898f SHA-256: 0ac2764b0cbf3c60462af4e913c1e7dae2275fba3a120c4d3501b25ed149f219
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains multiple links to a redirector hosted on netcdn.tw, which is flagged as malicious. The document body and embedded URLs suggest a lure for game-related cheats or hacks, a common social engineering tactic. While no scripts were extracted, the presence of malicious redirector links and the overall context strongly indicate a phishing or malware distribution attempt.

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-free-spin-27-game-hack In PDF document text
    • https://www.e-learningman18jakarta.com/__statics/gudangsoal/files/coin-master-free-spin-and-coins-links-2021_GM406889139.pdfIn PDF document text
    • https://www.e-learningman18jakarta.com/__statics/gudangsoal/files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://www.e-learningman18jakarta.com/__statics/gudangsoal/files/can-you-go-to-jail-for-downloading-hacks-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.e-learningman18jakarta.com/__statics/gudangsoal/files/wwwhaktutsin-2021-08-coinmasterfreespinandcoinlinkhtml-m-1_GM406889139.pdfIn PDF document text
    • https://www.e-learningman18jakarta.com/__statics/gudangsoal/files/coin-master-hack-2021-no-survey_GM406889139.pdfIn PDF document text
    • https://www.e-learningman18jakarta.com/__statics/gudangsoal/files/minecraft-svg-free_GM479516143.pdfIn PDF document text
    • https://www.e-learningman18jakarta.com/__statics/gudangsoal/files/microsoft-free-robux_GM431946152.pdfIn PDF document text
    • https://www.e-learningman18jakarta.com/__statics/gudangsoal/files/minecraft-for-macbook-free_GM479516143.pdfIn PDF document text
    • https://www.e-learningman18jakarta.com/__statics/gudangsoal/files/hacking-of-roblox-and-kids-you-tube_GM431946152.pdfIn PDF document text
    • https://www.e-learningman18jakarta.com/__statics/gudangsoal/files/free-roblox-accounts-with-robux_GM431946152.pdfIn PDF document text
    • https://www.e-learningman18jakarta.com/__statics/gudangsoal/files/how-to-get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://www.e-learningman18jakarta.com/__statics/gudangsoal/files/coin-master-free-coins-2021_GM406889139.pdfIn PDF document text
    • https://www.e-learningman18jakarta.com/__statics/gudangsoal/files/how-to-get-free-robux-gift-cards_GM431946152.pdfIn PDF document text
    • https://www.e-learningman18jakarta.com/__statics/gudangsoal/files/hack-coin-master-site-rssingcom_GM406889139.pdfIn PDF document text
    • https://www.e-learningman18jakarta.com/__statics/gudangsoal/files/hack-the-coin-master-game_GM406889139.pdfIn PDF document text
    • https://www.e-learningman18jakarta.com/__statics/gudangsoal/files/best-free-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • https://www.e-learningman18jakarta.com/__statics/gudangsoal/files/ways-to-get-robux_GM431946152.pdfIn PDF document text
    • https://www.e-learningman18jakarta.com/__statics/gudangsoal/files/how-to-get-free-robux-without-downloading-any-apps_GM431946152.pdfIn PDF document text
    • https://www.e-learningman18jakarta.com/__statics/gudangsoal/files/free-robux-com_GM431946152.pdfIn PDF document text
    • https://www.e-learningman18jakarta.com/__statics/gudangsoal/files/moon-active_GM406889139.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
stream_002_off00003422.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3422 23720 bytes
SHA-256: bf536bcecc1d21e289371e0b6581a8356afa6fe265d2b9b362d3c81a7b7b804e
font_01_sfnt_off000069df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69DF 18356 bytes
SHA-256: 1509afca223cb5201577694c4fa2cbbc36c9cb689f26e488555037dc024e0793

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