Malicious PDF — malware analysis report

Static analysis result for SHA-256 02a7a278f1264c54…

MALICIOUS

PDF

34.7 KB Created: 2021-06-28 12:02:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 66f4d99dbf57251a8e263c8dd43ad0ad SHA-1: 6b39c77a526565ed1b677b07bbd38dda17618497 SHA-256: 02a7a278f1264c5489de16ca3a1556171a48064a17bdb5d7896cc6e6fb6a09b6
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a prominent link disguised as a 'Kupcake Hack Roblox' generator, which is a common lure for malicious websites. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' confirms this, indicating the link likely redirects to a malicious site or triggers a download. The ML classifier also flagged the PDF as malicious with high confidence. No scripts were extracted, but the embedded URL is the primary indicator of malicious intent.

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.co/app/431946152/kupcake-hack-roblox-64-bits-game-hack PDF link annotation
    • http://library.stipjakarta.ac.id/etd/repository/free-spins-coin-master-legit_GM406889139.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/robux-hack-2021-no-verification_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/free-robux-without-survey_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/roblox-free-robux-group-payouts_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/wurst_GM479516143.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/coin-master-free-chip_GM406889139.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/today-free-spin-coin-master_GM406889139.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/is-minecraft-education-edition-free_GM479516143.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/roblox-ban_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/coin-master-free-stuff-links_GM406889139.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/script-roblox-hack-2021_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/how-to-hack-roblox-accounts-2021-ios_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/actual-free-robux_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/microsoft-store-robux_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/how-to-hack-coin-master-ios-jailbreak_GM406889139.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/free-online-generator-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/free-robux-sites-that-work_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/how-to-change-your-roblox-username-for-free-2021_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_off00002f41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F41 22532 bytes
SHA-256: 08cc837168534f2a89b920a8187a18070f20c082b44b9b708a0b8bb56129edc7
font_01_sfnt_off00006159.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6159 19428 bytes
SHA-256: ddf0bc2b8bf907b8c76824563ee72a50b020223ff281521cd2c14d5792d45b9d

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