Malicious PDF — malware analysis report

Static analysis result for SHA-256 c65d4e9739ae410d…

MALICIOUS

PDF

34.8 KB Created: 2021-06-25 07:00:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 36d1a044e6b87742677ad72654119306 SHA-1: 6c340e3ae502340ee96738daca44e7bce46fe22e SHA-256: c65d4e9739ae410df7675f92a3381ff82afc4728619ace9f3e4086c9f8ef584f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple heuristics indicating malicious redirector links, specifically targeting users with lures related to game hacks and generators. The embedded URL 'http://netcdn.co/app/431946152/roblox-bee-swarm-simulator-hack-games-game-hack' is identified as a malicious redirector. Although no scripts were explicitly extracted, the PDF structure and the nature of the lures suggest an attempt to deliver a second-stage payload or phish for credentials.

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/roblox-bee-swarm-simulator-hack-games-game-hack In PDF document text
    • https://library.institutpendidikan.ac.id/repository/coin-master-free-spins-apk-2021_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/how-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/microsoft-rewards-robux_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/uprobuxcom-free-robux_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/bloxland-earn-free-robux_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-robux-no-email_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/como-ser-hacker-en-roblox-skywars_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/hacker-pro-roblox_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/http-appsmob-info-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/how-to-get-free-robux-n-roblox_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-spin-coin-master-twitter_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/coin-master-free-spins-no-verification_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-robux-2021_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/appsmob-info-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/robux-hack-free-robux_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/cheapest-pubg-uc_GM1330123889.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-coin-app_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/best-shirt-roblox-free_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_off00002fd0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FD0 22360 bytes
SHA-256: 4dc36554d0ef5b98f9ca3b85180d3d97804fac126d5e32a02b21e02c28cc9fc6
font_01_sfnt_off000061ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61BA 19444 bytes
SHA-256: 43cd051933d621e0791ff5d5a33903af50a99a3ff2e5985d50f268bcf44c0078

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