Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff0ae1b789fa5007…

MALICIOUS

PDF

33.2 KB Created: 2021-07-19 16:00:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 66ece147fefa690fe698ba0be8889071 SHA-1: 4efa26611753b0f17e9bd891273654cf3b547b59 SHA-256: ff0ae1b789fa5007eafd369941d7312ea072a42694e385ebe1c2fad6cf6e6079
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and websites offering 'free generators' or 'hacks' for popular games, indicating a lure-based attack. The ML classifier also flagged this PDF with high confidence. The embedded links likely lead to further stages of malware distribution or phishing attempts.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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/431946152/roblox-hack-com-game-hack In PDF document text
    • http://classicskitours.net/images/freer-pro-tiktok_GM835599320.pdfIn PDF document text
    • http://classicskitours.net/images/coin-master-daily-free-spin-app_GM406889139.pdfIn PDF document text
    • http://classicskitours.net/images/free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://classicskitours.net/images/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
    • http://classicskitours.net/images/free-minecraft-accounts-2021_GM479516143.pdfIn PDF document text
    • http://classicskitours.net/images/get-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://classicskitours.net/images/roblox-hack_GM431946152.pdfIn PDF document text
    • http://classicskitours.net/images/how-to-make-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://classicskitours.net/images/coin-master-free-spins-app_GM406889139.pdfIn PDF document text
    • http://classicskitours.net/images/free-robux-obby_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
font_00_sfnt_off00002b25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2B25 23024 bytes
SHA-256: e14a06f44bf045d241150efddaa9b8aa5bcb75c502df3d78bc9656ed0b675958
font_01_sfnt_off00005ece.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5ECE 18628 bytes
SHA-256: 8438ca44c847ffc4ae99f3094d30cd7092138e2becf55c8cd08da5fc71448fbf

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