Malicious PDF — malware analysis report

Static analysis result for SHA-256 22c3ad5d4a29cd0b…

MALICIOUS

PDF

40.1 KB Created: 2021-04-28 04:03:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 0338f83df6a8b9df04f7b6b64b6fac72 SHA-1: eb44dda479d833ce2bf32ad1087e9ab41baae6cf SHA-256: 22c3ad5d4a29cd0bf16b5667b6851e7f33bf2630cde2425a8ca48884813710df
200 Risk Score

Malware Insights

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

The PDF contains multiple links to known malicious redirectors and impersonates Facebook to lure users into clicking them. The primary malicious URL is https://netcdn.xyz/app/431946152/one-piece-nightfall-hack-roblox-game-hack, which is associated with a "free generator / game hack" lure. While no scripts were explicitly extracted, the PDF structure and malicious links suggest it's designed to exploit vulnerabilities or trick users into downloading further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9941

Heuristics 5

  • 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.
  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://netcdn.xyz/app/431946152/one-piece-nightfall-hack-roblox-game-hack.
  • 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/431946152/one-piece-nightfall-hack-roblox-game-hack In PDF document text
    • https://lib-stie.yai.ac.id/repository/free-roblox-generator-2021.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/hack-all-games-in-roblox.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/hack-roblox-games-easy.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/free-robux-hack-pastebin-2021.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/how-to-get-free-robux-on-roblox-by-playing-games.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/how-do-you-get-robux-hack.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/codes-to-get-free-robux-may.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/free-robux-no-survey-works.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/free-robux-no-survey-or-deals.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/sprinting-sim-roblox-hacks.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_off00003fa9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3FA9 24748 bytes
SHA-256: 25df9eb292980bac8bb82fcf1e627c93b3f6673ee90f54adc67b90a66671fa3b
font_01_sfnt_off000078ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78AE 19012 bytes
SHA-256: aeb3d783977cba94764b4f2e70e914ebdae60831f1535f0d54438c9f0f90585b

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