Malicious PDF — malware analysis report

Static analysis result for SHA-256 72e97a30c553ccf8…

MALICIOUS

PDF

45.6 KB Created: 2021-06-11 05:42:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b77270f899ab21a5ffc52eb145f9825c SHA-1: 64de9c853e1aadf4999515c52d17e06ec6e8ab13 SHA-256: 72e97a30c553ccf8a94841598e4065701586473cf78a60ecab09b067b73b079a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to a known malicious redirector infrastructure, disguised as game hacks and generators. The document body and embedded URLs suggest a lure to trick users into clicking through to potentially malicious content. While no scripts were extracted, the presence of multiple malicious links and the ML classifier's high confidence indicate a high likelihood of malicious intent.

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.tw/app/431946152/shower-simiulator-roblox-cheats-game-hack In PDF document text
    • https://www.e-library.smpn09.semarangkota.go.id/repository/robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://www.e-library.smpn09.semarangkota.go.id/repository/minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://www.e-library.smpn09.semarangkota.go.id/repository/how-to-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.e-library.smpn09.semarangkota.go.id/repository/how-to-hack-case-clicker-roblox_GM431946152.pdfIn PDF document text
    • https://www.e-library.smpn09.semarangkota.go.id/repository/game-that-accually-gives-free-robux_GM431946152.pdfIn PDF document text
    • https://www.e-library.smpn09.semarangkota.go.id/repository/free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://www.e-library.smpn09.semarangkota.go.id/repository/free-cool-roblox-accounts_GM431946152.pdfIn PDF document text
    • https://www.e-library.smpn09.semarangkota.go.id/repository/can-you-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://www.e-library.smpn09.semarangkota.go.id/repository/free-robux-app_GM431946152.pdfIn PDF document text
    • https://www.e-library.smpn09.semarangkota.go.id/repository/roblox-plus-free_GM431946152.pdfIn PDF document text
    • https://www.e-library.smpn09.semarangkota.go.id/repository/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.e-library.smpn09.semarangkota.go.id/repository/how-to-play-piano-roblox-cheat_GM431946152.pdfIn PDF document text
    • https://www.e-library.smpn09.semarangkota.go.id/repository/roblox-how-to-make-animations-free_GM431946152.pdfIn PDF document text
    • https://www.e-library.smpn09.semarangkota.go.id/repository/free-robux-no-survey_GM431946152.pdfIn PDF document text
    • https://www.e-library.smpn09.semarangkota.go.id/repository/free-robux-discord_GM431946152.pdfIn PDF document text
    • https://www.e-library.smpn09.semarangkota.go.id/repository/hack-roba-cuentas-de-roblox_GM431946152.pdfIn PDF document text
    • https://www.e-library.smpn09.semarangkota.go.id/repository/comment-hacker-pour-avoir-des-robux_GM431946152.pdfIn PDF document text
    • https://www.e-library.smpn09.semarangkota.go.id/repository/how-to-get-verified-on-tiktok-for-free-2021_GM835599320.pdfIn PDF document text
    • https://www.e-library.smpn09.semarangkota.go.id/repository/roblox-hack-data-explorer-blox-no-hero-academia_GM431946152.pdfIn PDF document text
    • https://www.e-library.smpn09.semarangkota.go.id/repository/how-to-hack-roblox-games_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_off00005514.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5514 24500 bytes
SHA-256: 85927eeefc6d885fecd5b9a3145a8ed347741d9dc73d746087a00341e939f557
font_01_sfnt_off00008d99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D99 18964 bytes
SHA-256: ee12962c00290d5fd267e75a1bd43709db75311313a7f0ad12f1604cb1ccbb10

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