Malicious PDF — malware analysis report

Static analysis result for SHA-256 4cbe2d4c3adaa978…

MALICIOUS

PDF

43.6 KB Created: 2021-05-14 09:34:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: e25608815135492f00a8132acf8139da SHA-1: 3c749f9abb4b8edefa6a7152e7d180d3c0908853 SHA-256: 4cbe2d4c3adaa9786a88a4d8acaa3cf0d9c1b942e6d823e179f5beecfed34ef2
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically advertising free Robux or game hacks. The primary malicious URL identified is https://netcdn.xyz/app/431946152/free-robux-that-actually-works-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a social engineering lure designed to lead users to potentially harmful content or further malware downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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.xyz/app/431946152/free-robux-that-actually-works-game-hack In PDF document text
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/play-roblox-for-free-on-google_GM431946152.pdfIn PDF document text
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/free-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/free-domain-for-minecraft-server_GM479516143.pdfIn PDF document text
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/earn-free-robux_GM431946152.pdfIn PDF document text
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/coin-master-spin-link-today_GM406889139.pdfIn PDF document text
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/free-roblox-exploits_GM431946152.pdfIn PDF document text
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/free-spin-link-for-coin-master-haktuts_GM406889139.pdfIn PDF document text
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/free-spin-coin-master-game_GM406889139.pdfIn PDF document text
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-games_GM431946152.pdfIn PDF document text
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/coin-master-cards-free-cards_GM406889139.pdfIn PDF document text
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/jailbreak-script_GM431946152.pdfIn PDF document text
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/best-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/minecraft-for-macbook-free_GM479516143.pdfIn PDF document text
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/free-robux-games-on-roblox_GM431946152.pdfIn PDF document text
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/how-to-hack-coin-master-in-pc_GM406889139.pdfIn PDF document text
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/what-do-roblox-points-do_GM431946152.pdfIn PDF document text
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/robux-fun-hack_GM431946152.pdfIn PDF document text
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/free-minecraft-games-for-kids_GM479516143.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_003_off00004bea.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BEA 25404 bytes
SHA-256: 2cb44326ef337ab94141bd179a4c50fd3183898b756f651d740f5db7bd066b0b
font_01_sfnt_off000085c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85C1 19136 bytes
SHA-256: e9e8736bed1826902485352f20294e96b644ee357cd6186db79dc9b33c578c67

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