Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a61f554595b271b…

MALICIOUS

PDF

45.8 KB Created: 2021-06-04 00:51:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 51cd872f1dcf3906ec0ec94460bf09d5 SHA-1: 2e3c9417416bdc3e095e6e0db24fc2caeee12f56 SHA-256: 7a61f554595b271be64015576723e8570dd7fce41ec50466189aff740b074535
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to known malicious infrastructure, specifically promoting "game hacks" and free spins. The document body and embedded links strongly suggest a social engineering lure designed to trick users into visiting potentially harmful websites. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate malicious redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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-daily-free-spins-link-today-haktuts-game-hack In PDF document text
    • https://lib.unitri.ac.id/repository/coin-master-hacks-and-cheats_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/coin-master-free-spin-link-daily_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/vip-roblox-free_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/get-free-spins-coin-master-link_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/tiktok-minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/how-to-downgrade-minecraft-pe_GM479516143.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/coin-master-hack-mod-apk-2021-download_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/password-free-roblox-accounts_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/coin-master-free-spins-app-android_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/coin-master-free-spins-link-today_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/free-roblox-followers-generator-2021_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/free-roblox-account-generator_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/pokemon-go-free-bag-upgrade_GM1094591345.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/2021-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/minecraft-com-free_GM479516143.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/coin-master-hack-link_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/how-to-get-minecraft-for-free-on-chromebook_GM479516143.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/download-coin-master-hack-apk_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/robux-generator-without-human-verification_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/how-to-make-your-own-minecraft-pe-server-for-free_GM479516143.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
stream_004_off000052a4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x52A4 26616 bytes
SHA-256: f8a327529c9f9dded24af0767a7fd077019bf0cc7ccc0ea8714d95c37f22cc6f
font_01_sfnt_off00008ef5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EF5 18792 bytes
SHA-256: 134988fea06afbf49125976edeb042ab585c1fa975de478a6ecfabe8eedb10d1

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