Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc4c8f304740ba2a…

MALICIOUS

PDF

43.5 KB Created: 2021-06-03 12:03:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 8c1821af658f1335c274a6aa907afe2f SHA-1: a9f80eb62e5452bef8f14832ffa892657156e1ac SHA-256: cc4c8f304740ba2a0ddb576342959cd8e99b404746cef9ee04a1c7d091ad4667
160 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a game hack redirect lure, directing users to a malicious URL. The document body, though heavily obfuscated, contains references to the same malicious URL. The presence of embedded links and the nature of the lure suggest an attempt to trick users into visiting a potentially harmful site, likely for credential harvesting or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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/406889139/10-free-spins-coin-master-game-hack In PDF document text
    • http://digilib.stimata.ac.id/repository/coin-master-free-spins-without-verification_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/coin-master-free-spins-and-coins-blogspot_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/free-robux-with-no-verification_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/roblox-free-online-game_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/is-minecraft-free_GM479516143.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/free-tiktok-fans_GM835599320.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/como-conseguir-monedas-infinitas-y-tiradas-de-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/games-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/how-to-get-free-robux-no-survey_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/hack-roblox-players_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/coin-master-fan_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/coin-master-fan-page-free-spins_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/free-spins-for-coin-master-that-work_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/get-free-robux-gg_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/coin-master-free-spins-hack-ios_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/coin-master-hack-software_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/free-tiktok-fans-no-verification_GM835599320.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/como-hackear-a-una-persona-en-roblox_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
stream_004_off00004e99.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E99 24948 bytes
SHA-256: 04ff34ae8ee4a3bb6b7da30b86414ebf84adae804117e94ee34249539d657c29
font_01_sfnt_off000087b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87B9 18164 bytes
SHA-256: 9bc61af2acbda784231945e40c4a4bb5d6810b0d04641be6b37b2cdd3c5b78bc

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