Malicious PDF — malware analysis report

Static analysis result for SHA-256 3aa22145ea20df08…

MALICIOUS

PDF

44.3 KB Created: 2021-06-04 00:52:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 7dc8764da951e64fe531d0c114dd69eb SHA-1: a9ba78571c7fb792daa7968edf55fc4ad88891d9 SHA-256: 3aa22145ea20df0857f854c9a70ff5c08e9ede2f5cdcc80d8a837fb0ebec35e7
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a high-severity heuristic firing for a game hack redirect lure, directing users to a URL that likely hosts malicious content. The document body, though partially corrupted, contains references to game hacks and the same suspicious URL. The presence of embedded URLs and the nature of the lure suggest a phishing or social engineering attack aimed at tricking users into downloading malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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 https://netcdn.online/app/431946152/how-to-get-speed-hack-in-roblox-booga-booga-game-hack PDF link annotation
    • http://www.library.gkigadingserpong.org/repository/minecraft-114-4-download-free_GM479516143.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/free-minecraft-alt-generator_GM479516143.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/roblox-cheat-codes_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/free-coin-master-spins-link-download_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/free-robux-thumbnail_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/coin-master-hack-version-2021-download_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/coin-master-hack-spins-and-coins-unlimited-free-download_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/download-coin-master-apk-hacked_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/roblox-arsenal-hacks-download_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/free-spins-coin-master-2021-hack_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/free-minecraft-worlds_GM479516143.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/minecraft-noob-vs-pro-vs-hacker-vs-god_GM479516143.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/how-to-get-minecraft-for-free-on-xbox-360_GM479516143.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/minecraft-apk-114-4_GM479516143.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/free-robux-today_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/coin-master-hack-version-apk-download_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/robux-app_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/coin-master-free-gold-cards-link-2021ee-spins_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/how-to-get-infinite-robux_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/wizard-hacks_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
font_00_sfnt_off00005182.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5182 23932 bytes
SHA-256: f2e64d9b18e09ef12a78a504d69fe52d09c9ede44281c919ec408d4b065e9da6
font_01_sfnt_off000087ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87ED 19088 bytes
SHA-256: 42f84a206b2a0a52a94998402c3d8d9f2be844a17f6bbeb2e63fcdbd29e1fa22

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