Malicious PDF — malware analysis report

Static analysis result for SHA-256 f130c1190704bdf3…

MALICIOUS

PDF

51.0 KB Created: 2021-06-04 03:33:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 8158b06e8962a5473e371e0006edb5a3 SHA-1: 56e8b63c8591bb2e2d26920c0e610a2209ab0dde SHA-256: f130c1190704bdf352c70b8f5c5b224e00c4c86c4bfcbbab873f13ca7aed6d37
160 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, including one specifically for a 'game hack'. The document body, though heavily obfuscated, contains references to a 'wurst-hacked-client' and a URL that aligns with the heuristic findings. This suggests the document is designed to trick users into downloading potentially malicious software or visiting compromised sites by posing as a game hack generator.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9713

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.online/app/479516143/wurst-hacked-client-112-2-game-hack In PDF document text
    • http://digilib.uim.ac.id/repository/coin-master-free-spins-cheat_GM406889139.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/tiktok-follower-bot-free_GM835599320.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/hack-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/free-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/robux-hack-tools_GM431946152.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/rbl-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/how-to-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/minecraft-download-free-download_GM479516143.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/where-can-i-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/free-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/free-robux-generator-no-human-verification-or-surveys_GM431946152.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/free-robux-master_GM431946152.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/earn-free-robux_GM431946152.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/roblox-mobile-hack_GM431946152.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/how-to-make-roblox-clothes-for-free_GM431946152.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/coin-master-free-gifts_GM406889139.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/coin-master-hack-no-survey-or-verification_GM406889139.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/free-account-roblox-2021_GM431946152.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/free-robux-gen_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005010.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5010 28176 bytes
SHA-256: 731583d46a4812d64f0e073450e83a579c6b0d5d9a087047797823a69ac7191e
font_01_sfnt_off00009019.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9019 2848 bytes
SHA-256: a172afdc3138eb14c2bc994758bff4f521700d2c8fbb096eade47847f05d2c2c
font_02_sfnt_off000099cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x99CD 2800 bytes
SHA-256: 1756bf2370268b82899ca819fa059e16c32fca103da24d388e887c3e7a349852
font_03_sfnt_off0000a3c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA3C5 18556 bytes
SHA-256: 63ca5765d5a633822034c340c76c261e5ec70c1ec6d5f5c3e1c9baf804a68ff4

Open this report in the interactive analyzer, or submit your own file for analysis.