Malicious PDF — malware analysis report

Static analysis result for SHA-256 69c584bc0e4d359e…

MALICIOUS

PDF

44.7 KB Created: 2021-06-08 22:15:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b81f245acd831de2cc9a11c3a3e09d5b SHA-1: eece5d4d83c86588cc01c100c512cc1515939b87 SHA-256: 69c584bc0e4d359eb3567bcbe5ca3ef0b72b63cbcd6ec1f7407c9ba436a78ab0
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs and a prominent call-to-action related to obtaining free in-game currency for popular games. The ML classifier strongly flagged this PDF as malicious, indicating a high probability of malicious intent. The presence of numerous links to external resources suggests an attempt to redirect the user to a site that may host a secondary payload or phishing content.

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.tw/app/431946152/robux-hack-2021-free-robux-generator-game-hack In PDF document text
    • http://muslib.unmus.ac.id//repository/coin-master-daily-free-spins-link-today-twitter_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/free-roblox-dominus_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/2021-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/how-to-get-free-robux-without-verifying_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/coin-master-apk-free-download_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/how-to-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/cm-free-spin-link-today_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/how-to-get-free-roebucks-on-roblox_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/instagram-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/coin-master-daily-free-spins-link-today-2021_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/mcpe-master-hack-coins_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/como-hackear-coin-master_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-daily-gift-free-spins-and-coins-link_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/how-to-hack-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/mcpe-master-hack-unlimited-coins-apk_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/how-to-hack-coin-master-in-pc_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-card-collection-in-coin-master_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/how-to-download-minecraft-for-free-on-your-phone_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-heaven-free-spins-today_GM406889139.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_off0000507f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x507F 25152 bytes
SHA-256: a3caf60a5efa6c0081bdb99861d7d9bb5a44f36d75232e3c6757be9c121ec491
font_01_sfnt_off00008a46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A46 18916 bytes
SHA-256: c1910a95e11121a86038688aeafb42d9dfed7b53f41272625ed7edfe1812bcdc

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