Malicious PDF — malware analysis report

Static analysis result for SHA-256 97b5890c56164944…

MALICIOUS

PDF

42.9 KB Created: 2021-05-13 20:38:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: ba51bf29d06268c81b967e8fba92b8df SHA-1: cc4b3b931a5e21a56eae2ce3bb7c1a3e23778722 SHA-256: 97b5890c561649443839acaa312a755c1f799b54aa8e9f270d0e862ec92013ca
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and lures users with game-related cheats and hacks. The primary malicious URL identified is https://netcdn.xyz/app/406889139/how-many-levels-does-coin-master-have-game-hack. The document's structure and embedded URLs suggest it is designed to trick users into visiting malicious sites, likely for further exploitation or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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 https://netcdn.xyz/app/406889139/how-many-levels-does-coin-master-have-game-hack In PDF document text
    • http://lib.stimykpn.ac.id//repository/rare-free-links-to-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-robux-by-watching-ads_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/kuso-icu-roblox-hack_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/coin-master-hack-xyz-download-free_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/coin-master-34-5-hack_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/coin-master-spin-hack-no-verification_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/minecraft-114-4-download_GM479516143.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-coins-2021-coin-master-link_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/can-you-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/500-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/gamehunters-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/how-do-u-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/coin-master-free-spin-app-2021_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/coin-master-free-spins-today-new_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-robux-that-actually-works_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/minecraft-java-edition-download-free_GM479516143.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/blox-fish-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/minecraft-free-download-pc_GM479516143.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
stream_003_off0000480a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x480A 27340 bytes
SHA-256: f1dfd11be4577c8192241dad69b682615e8146251b21c00fb37450edf6a18425
font_01_sfnt_off0000856f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x856F 18248 bytes
SHA-256: 52d865af7dd598e24d7c0709f8ada67b192f40b6c93a136a02881c34a4284ce8

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