Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2cc876597368160…

MALICIOUS

PDF

34.8 KB Created: 2021-07-03 16:17:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: d1ebbd0f122d6dca994371b6916107b9 SHA-1: 0b8892a466dd3f93c4c6838b82fce63a85043bea SHA-256: a2cc8765973681606a6496d7a1660c84d18804d0961faaa4fb6e734bc425ab18
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to game hacks and free Robux to trick users into clicking a link. The primary malicious URL identified is http://netcdn.tw/app/431946152/robux-miner-game-hack, which likely serves as a redirector to a malicious payload or phishing page. The ML classifier strongly indicated maliciousness, and the presence of multiple game-related lures reinforces this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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.tw/app/431946152/robux-miner-game-hack PDF link annotation
    • http://library.unissula.ac.id/fk/repository/case-clicker-roblox-cheat_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/gamepasses-for-free-roblox_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/coin-master-online-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/my-account-got-hacked-roblox_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/coin-master-hack-apk-april-12-2021_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/coin-master-hack-spins-apk-download_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/wurst-client-112-2_GM479516143.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/www-free-robux-com_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/coin-master-hacked-apk-download-for-android_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/how-to-become-a-speed-hacker-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/minecraft-svg-free_GM479516143.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/descargar-roblox-hack-apk_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/free-tiktok-likes_GM835599320.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/free-spins-for-coin-master-without-human-verification_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/apocalypse-rising-roblox-cheat-engine_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/roblox-lumber-tycoon-2-cheats-xbox-one_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/how-to-get-free-chest-in-coin-master_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/how-to-get-minecraft-bedrock-for-free_GM479516143.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/how-to-get-minecraft-for-free-on-your-phone_GM479516143.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_off00003123.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3123 22644 bytes
SHA-256: 9b5c4d8356490e3f3c940a7870b8de95407f480c84752f5d9d003e043d80f576
font_01_sfnt_off000063ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63BA 18868 bytes
SHA-256: 183429bdbf7ecae0c18e50d403fb432c957990045bfe1c1dbf73e59a2b4bdc01

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