Malicious PDF — malware analysis report

Static analysis result for SHA-256 a34b8482258760d3…

MALICIOUS

PDF

34.7 KB Created: 2021-06-27 13:57:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 83e4d2d084e29d6390bd8ec59b9fe817 SHA-1: e7d686a2845a5b1a2ca659d7a57d6b34f857d300 SHA-256: a34b8482258760d37cb86a7208f9b718676ed52b929a7c596e4d70e6a4e3f6de
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains lures for game hacks and free currency, directing users to a malicious redirector URL. The ML classifier strongly flagged this PDF as malicious. The embedded URLs and document body content indicate a phishing attempt to trick users into visiting potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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.co/app/431946152/how-to-get-robux-on-roblox-for-free-2021-game-hack In PDF document text
    • http://repository.unla.ac.id/repository/roblox-jailbreak-kupcake-hack_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/coin-master-hack-pro-gamers-com_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/roblox-hack-android-1-com_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/free-fire-coin-master_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/coin-master-free-coins--spins_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/roblox-skins-boy-free_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/free-robux-real_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/roblox-free-rthro-packages_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/descargar-hacks-para-roblox-jailbreak-2021_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/gameoffice-net-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/lastrick-com-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/master-hack-coin_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/how-to-get-free-robux-on-android_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/roblox-robux-hack-without-download_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/coin-master-mod-apk-free-download_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/roblox-website-robux_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/free-robux-link_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/rbx-land-free-robux_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/hey-google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/how-to-hack-the-mad-murderer-roblox_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_off00002fd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FD9 22300 bytes
SHA-256: c7097e1e217802b0d554708bd604d4fab103be373524e063913d0256817f6a6d
font_01_sfnt_off00006137.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6137 19460 bytes
SHA-256: 89f4df59438818d45a9a18c0e97e60687686638d1cc7745e8dfec3abd76114a9

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