Malicious PDF — malware analysis report

Static analysis result for SHA-256 02f30a26e938cdc3…

MALICIOUS

PDF

46.5 KB Created: 2021-05-16 00:10:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: e30660eb584e8c3649423dcf80b8bc07 SHA-1: 5c51a50db61526bb1d96a17ce3470d1c71255975 SHA-256: 02f30a26e938cdc37dc2e4e66e635f636ec1b5cddedf2794f596409003ad9b03
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links, with a primary URL pointing to a 'free generator / game hack' lure. This heuristic, combined with the ML classifier, strongly suggests a malicious intent to redirect users to potentially harmful content. Although no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a social engineering tactic to trick users into downloading malware or visiting phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

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.xyz/app/479516143/play-full-version-of-minecraft-for-free-no-download-game-hack PDF link annotation
    • http://digilib.uim.ac.id/repository/how-do-you-get-free-roebucks_GM431946152.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/robloxfun-com-robux_GM431946152.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/how-to-get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/minecraft-pe-free-download-ios_GM479516143.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/free-things-on-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/free-coins-coin-master-blog_GM406889139.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/free-spins-promo-code-for-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/free-robux-for-kids-no-verification_GM431946152.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/orewards-com-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/best-free-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/best-free-hacked-client_GM479516143.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/blox-world-free-robux_GM431946152.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/daily-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/free-robux-websites-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/hack-the-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/blox-fun-info_GM431946152.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/roblox-apk-hack_GM431946152.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/free-robux-thumbnail_GM431946152.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/how-to-get-free-robux-easy-2021_GM431946152.pdfIn PDF document text
    • https://playhack.in/minecraftIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004a6d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A6D 27960 bytes
SHA-256: 2108ddd7b6d1b75fb99198086704f7b8361e9a7d1811dd586a3325c9dcf9bedc
font_01_sfnt_off00008772.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8772 2904 bytes
SHA-256: 7e6c95af62597fca50e5790f27262ff650b4539ae1f60ec4b70e6d5e14ac2b25
font_02_sfnt_off00009180.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9180 18900 bytes
SHA-256: 72a4985a0f1854ed26b55ec1f9c271b843743081401250fa5f99a0b23226d3ed

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