Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c9ea6c75e6cd9d6…

MALICIOUS

PDF

32.4 KB Created: 2021-07-22 02:35:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 79bc74c6f7d0f9c085983ef4693bb9f7 SHA-1: d35ffd29a00f3490999781bddb3077baab1dc7ca SHA-256: 8c9ea6c75e6cd9d68c25a5c95a3838e041643330d1506a9d39f26a2b70a3c944
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'free generator / game hack' lures. The ML classifier strongly flagged this PDF as malicious. The embedded URLs and the heuristic firings indicate a phishing attempt designed to trick users into visiting potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9900

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/minecraft-bedrock-free-with-java-game-hack In PDF document text
    • http://www.perpusffup.or.id/repository/minecraft-realms-free-codes_GM479516143.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/free-robux-website_GM431946152.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/free-robux-websites-2021_GM431946152.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/earn-free-robux_GM431946152.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/minecraft-games-to-play-for-free_GM479516143.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/is-minecraft-bedrock-edition-free_GM479516143.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/how-to-get-free-robux-without-verifying_GM431946152.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/get-free-tiktok-followers_GM835599320.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002a73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A73 21976 bytes
SHA-256: 69a97c75f39eab0bbdde5dab256978453c12cb77ce95b73df5d0410e9b7d23af
font_01_sfnt_off00005af4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5AF4 18912 bytes
SHA-256: 4030f6649d0ebdd9f19ba86bdfab3d907e637ec7756e67114778b3c35e301262

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