Malicious PDF — malware analysis report

Static analysis result for SHA-256 7440abd51017868f…

MALICIOUS

PDF

43.8 KB Created: 2021-06-03 09:05:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b06b2c84460ffa9b77aac690c9e6d243 SHA-1: 09a90f560218816720b0b5e7e5afb177c7f62bda SHA-256: 7440abd51017868fb849b59cc6aeccd7a3a25353ba3188a4962ee27f4e5cefdb
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 "game hacks" and "generators". The heuristic firings indicate that these links are associated with known malicious redirectors and lure users with promises of free in-game currency or cheats. While no scripts were explicitly extracted, the nature of the links suggests a potential for further malicious activity, such as downloading additional payloads or leading to phishing pages.

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/coin-master-hack-no-survey-2021-game-hack In PDF document text
    • http://perpustakaan.pn-tilamuta.go.id/repository/tiktok-free-no-download_GM835599320.pdfIn PDF document text
    • http://perpustakaan.pn-tilamuta.go.id/repository/free-robux-generator-no-survey-no-download-no-human-verification_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pn-tilamuta.go.id/repository/http-appsmob-info-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pn-tilamuta.go.id/repository/free-views-tiktok_GM835599320.pdfIn PDF document text
    • http://perpustakaan.pn-tilamuta.go.id/repository/free-coin-master-game_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pn-tilamuta.go.id/repository/coin-master-free-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pn-tilamuta.go.id/repository/minecraft-free-download_GM479516143.pdfIn PDF document text
    • http://perpustakaan.pn-tilamuta.go.id/repository/getrobux-come_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pn-tilamuta.go.id/repository/easy-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pn-tilamuta.go.id/repository/rblx-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pn-tilamuta.go.id/repository/coin-master-apk-hack-2021-ios_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pn-tilamuta.go.id/repository/how-to-get-minecraft-coins-for-free_GM479516143.pdfIn PDF document text
    • http://perpustakaan.pn-tilamuta.go.id/repository/free-roblox-accessories_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pn-tilamuta.go.id/repository/master-coin-free-spin_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pn-tilamuta.go.id/repository/bux-life-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pn-tilamuta.go.id/repository/hackear-juego-coin-master-espaol_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pn-tilamuta.go.id/repository/free-coin-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pn-tilamuta.go.id/repository/free-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pn-tilamuta.go.id/repository/daily-free-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pn-tilamuta.go.id/repository/coin-master-game-2021-free-spin-link_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_off000051ce.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x51CE 24216 bytes
SHA-256: 159772405eb1bd9581eaa925a45978cebda8584a73ae5fb0213a567e5d6a73e7
font_01_sfnt_off00008781.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8781 18552 bytes
SHA-256: 08b93b8e79f8f8fdf66b2b731fa8b5bfc2f7a48790bf7a909dc60fe86eb0a381

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