Malicious PDF — malware analysis report

Static analysis result for SHA-256 f09a9167dfa162c1…

MALICIOUS

PDF

44.6 KB Created: 2021-06-03 08:21:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 3ea27c631255c2fbea3c35936c7b6ae3 SHA-1: ade41b4eec5da2e3ee89d332196853d5429ad044 SHA-256: f09a9167dfa162c1d3f226d10abb8b539c4af25df5292892baee7799390bd8b6
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to redirectors and potentially malicious infrastructure, masquerading as game hacks or generators. The presence of a 'download button' heuristic further suggests a workflow intended to trick the user into downloading a payload. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly indicate a malicious redirection and download attempt.

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/431946152/rbxcity-free-robux-game-hack In PDF document text
    • http://perpus.masda.ac.id/repository/free-coin-master-stuff_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/minecraft-hacker-skin_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/clean-master-free-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/hack-robux_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/roblox-adopt-me-hacks-2021_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/pokemon-go-free-levels_GM1094591345.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-club-hack_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/pubg-uc-100k_GM1330123889.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/minecraft-pvp-hacks_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-free-coins-app_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/actual-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/minecraft-apk-android-free_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-coin-master-links_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/tiktok-free-movie-hack_GM835599320.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/plug-toolbox-for-minecraft-free-ios_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-minecraft-skins-xbox-one_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/free-400-spins-coins-master_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-hack-app-download-free_GM406889139.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_off00004e7f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E7F 26180 bytes
SHA-256: 58ff1f34e52edbf3fae384c0457bc626299ef4bf4b1b992c93e01683f59e64ee
font_01_sfnt_off00008b60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B60 18420 bytes
SHA-256: f6fda3bfe323f9f0676c079c6b9141a3a072b0621584b37e36c0c9937e592518

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