Malicious PDF — malware analysis report

Static analysis result for SHA-256 b187257f1a0d4a33…

MALICIOUS

PDF

35.4 KB Created: 2021-07-01 12:48:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 87d10e375783d0e5165896687aa93718 SHA-1: d625bbfaefe8a4d8e9a2cde5edd024b377190bb8 SHA-256: b187257f1a0d4a33737744c8504b63f09b222747f82a6427c06c3447b6965fb6
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple embedded links that redirect to malicious infrastructure, specifically promoting 'free generator / game hack' lures. The primary malicious URL identified is http://netcdn.co/app/431946152/neil-free-robux-game-hack. The document body and heuristics indicate a social engineering tactic to trick users into visiting these sites, likely for further malware delivery or credential harvesting.

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/neil-free-robux-game-hack In PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-online-robux_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/mcpe-master-unlimited-coins-hack-apk_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/get-free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/can-you-give-me-free-robux_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/coin-master-free-spins-cheat_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-tiktok-accounts_GM835599320.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/how-to-get-free-gamepasses-on-roblox_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/quickscope-simulator-roblox-hacked_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/roblox-lcoins-hack_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/coin-master-hack-apk-35-18_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/spins-gratis-coin-master-hoy_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/2021-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/roblox-free-download_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/nike-shirt-roblox-free_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/how-do-you-get-free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-roblox-account-names_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/hack-infinito-chakra-naruto-final-bond-roblox_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-robux-websites-that-work_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-robux-download_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_off000031bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31BC 23172 bytes
SHA-256: a5ae36032ce3515104dd722ce29582683679341c6779e99bee8c7e6db13ef3be
font_01_sfnt_off000065fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65FE 18912 bytes
SHA-256: 8a256bb236fc5d191fde72358f112180913b9cf32a7046c94be6a9cccd139889

Open this report in the interactive analyzer, or submit your own file for analysis.