Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e15d1772373ad24…

MALICIOUS

PDF

33.8 KB Created: 2021-07-06 00:26:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d49c7ad07c7bdc76b4148ca55c901623 SHA-1: 82a034fe6510dd659a84bd11827e9ef31068706a SHA-256: 7e15d1772373ad2459fecbaff1af5b8490967e313c6af6123135ca4838ee4506
160 Risk Score

Malware Insights

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

The PDF document contains multiple links, including one to a known malicious redirector infrastructure at http://netcdn.tw/app/479516143/wurst-game-hack. This lure is designed to trick users into believing they are accessing game hacks or generators, which is a common social engineering tactic. The presence of numerous similar URLs suggests a phishing or scam campaign aimed at driving traffic to potentially malicious sites.

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/479516143/wurst-game-hack In PDF document text
    • http://lib.unar.ac.id/repository/links-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.unar.ac.id/repository/spinuri-gratis-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.unar.ac.id/repository/free-robux-no-verification-no-download-2021_GM431946152.pdfIn PDF document text
    • http://lib.unar.ac.id//repository/coin-master-hack-2021-without-human-verification_GM406889139.pdfIn PDF document text
    • http://lib.unar.ac.id/repository/get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://lib.unar.ac.id/repository/coin-master-free-spins-for-today_GM406889139.pdfIn PDF document text
    • http://lib.unar.ac.id/repository/toolbox-for-minecraft_GM479516143.pdfIn PDF document text
    • http://lib.unar.ac.id//repository/coin-master-daily-free-spins-haktuts_GM406889139.pdfIn PDF document text
    • http://lib.unar.ac.id//repository/free-robux-no-human-verification-and-no-survey_GM431946152.pdfIn PDF document text
    • http://lib.unar.ac.id/repository/download-roblox-hack-robux-free_GM431946152.pdfIn PDF document text
    • http://lib.unar.ac.id/repository/minecraft-apk-free-download_GM479516143.pdfIn PDF document text
    • http://lib.unar.ac.id/repository/free-robux-2021-no-hacks_GM431946152.pdfIn PDF document text
    • http://lib.unar.ac.id/repository/cheat-engine-roblox-hack-prison-life_GM431946152.pdfIn PDF document text
    • http://lib.unar.ac.id/repository/coin-master-game-free-spin-download_GM406889139.pdfIn PDF document text
    • http://lib.unar.ac.id/repository/coinmaster-free-cards_GM406889139.pdfIn PDF document text
    • http://lib.unar.ac.id/repository/roblox-free-online-game_GM431946152.pdfIn PDF document text
    • http://lib.unar.ac.id/repository/coin-master-facebook-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.unar.ac.id/repository/hackear-juego-coin-master-espaol_GM406889139.pdfIn PDF document text
    • http://lib.unar.ac.id//repository/freespinandcoinblogspotcom-2021-11-coinmasterfreespinandcoinlinkshtml_GM406889139.pdfIn PDF document text
    • http://lib.unar.ac.id/repository/how-do-you-get-free-robux-without-paying_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_off00003098.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3098 22284 bytes
SHA-256: 567c01b35a7a04a9bb581802ce7d0ee2f4d26a3ad78b55672345d542da3cb8c0
font_01_sfnt_off000061e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61E1 18072 bytes
SHA-256: bfe640fece8ec17f9f1aab4c59e3302c849608263b50329376eef2517c23199e