Malicious PDF — malware analysis report

Static analysis result for SHA-256 799dccf67dc33638…

MALICIOUS

PDF

47.0 KB Created: 2021-06-03 13:42:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 9e08d67cdfcf23f8b4d125ece4376f78 SHA-1: 1ac02a12f04767f7f515a0d090d7661c7bd5cdb6 SHA-256: 799dccf67dc33638eada804fb8f75ed88e901b3eac1b89ab4e38c7b0c2ff1253
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

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/406889139/hack-coin-master-online-without-human-verification-game-hack PDF link annotation
    • http://digilib.unla.ac.id/repository/coin-master-free_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/roblox-hack-codes_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/coin-master-hacking-news_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/pokemon-go-joystick-ios-2021-free_GM1094591345.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/free-roblox-templates_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/coin-master-hack-app-for-iphone_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/can-you-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/mcpe-free-download_GM479516143.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/coin-master-hack-2021-apk_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/hack-coin-master-without-verification_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/free-pet-treats-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/coin-master-ios-hack-download_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/how-to-get-free-robux-easy-no-download_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/download-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/moon-static-coin-master-generator-hacks-free_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/free-roblox-avatar_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/free-robux-websites-no-human-verification_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/free-robux-codes-no-verification_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/facebook-coin-master-hack_GM406889139.pdfIn 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_004_off00004f84.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F84 25488 bytes
SHA-256: e23b9894d1da9bf06cf8a19088cea2c4f96609da093aa9df7b2d2e9713b3aacf
font_01_sfnt_off00008952.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8952 18688 bytes
SHA-256: aff6012002d7c8d1238c8ca496166b12a8d25d6fb5282892c0f4493fdd227159
font_02_sfnt_off0000ac63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAC63 3264 bytes
SHA-256: e32c06502c11b52acb5e814091c5fdbffd1e2a904ac7a9cfb8b5b180bd139088

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