Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b0698c8ea972135…

MALICIOUS

PDF

33.4 KB Created: 2021-07-04 09:54:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: b7595e9934abed4b9bcb3d245ae5a961 SHA-1: 1b14697943b124a34122d517fab7563251c4a285 SHA-256: 7b0698c8ea9721356cc46784b8151a98cda4a246bf44a87dcb13f8483e955e21
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains a lure related to 'Roblox Hacks 2021' and links to a suspicious URL. This URL, http://netcdn.tw/app/431946152/roblox-hacks-2021-game-hack, is identified as a redirector for game hacks, strongly suggesting it leads to a malicious payload or scam. The ML classifier also flagged this PDF as malicious with high confidence.

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/roblox-hacks-2021-game-hack PDF link annotation
    • http://lib.uho.ac.id/library//repository/coin-master-free-spins-cheat_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/coin-master-hack-apk_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/dupe-tool-hack-roblox_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/coin-master-free-daily-spins-link_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/free-roblox-hack-us_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/coin-master-rewards-app_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/robux-for-offers_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/coin-master-free-daily-rewards_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/a-lot-of-robux_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/hacks-master-coin_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/www-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/static-moonactive-net-rewards-2021_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/robux-com-roblox_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/coin-master-download-hack-ios_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/minecraft-build-hacks_GM479516143.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/how-to-get-minecraft-windows-10-edition-for-free_GM479516143.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/robux-2021_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/coin-master-hack-mobile_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/coin-master-free-cards-link_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/hacks-for-minecraft-bedrock_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_off00002d13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D13 21736 bytes
SHA-256: be5bdc766270164e54071923eb270dc121ee72a1b04b3211cc4da284ae4fdad7
font_01_sfnt_off00005d00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D00 19056 bytes
SHA-256: a827687bde1c23907f75db23928d8c544c1849638492c2c48bf6e5fa6ea38882

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