Malicious PDF — malware analysis report

Static analysis result for SHA-256 78added6a5a5b27c…

MALICIOUS

PDF

35.0 KB Created: 2021-07-04 20:14:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 6cbbd384e727a4668f0f74d52541f57e SHA-1: 7f76161be634e8af17840144868e5a924700d3cb SHA-256: 78added6a5a5b27cd4ebd7d1c0741933c9844cfa5b5a851f884c835a7f770da7
82 Risk Score

Malware Insights

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

The PDF document contains a high-severity heuristic firing indicating it links to a 'free generator / game hack' redirector. The document body explicitly mentions 'Se Puede Hackear Coin Master' and includes the malicious URL. This suggests a social engineering attack aiming to trick users into visiting a potentially harmful site.

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/406889139/se-puede-hackear-coin-master-game-hack PDF link annotation
    • http://lib.teknik.unimal.ac.id/repository/free-roblox-accounts-usernames-and-passwords-2021_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/coin-master-free-spins-2021-today_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/how-to-get-free-stuff-in-roblox-royale-high_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/how-i-get-free-robux-meme_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/akuqo-roblox-hack_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/how-to-hack-coin-master-without-root_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/how-to-hack-in-arsenal-roblox_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/roblox-free-items-glitch_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/free-coin-master-cards_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/free-robux-generator-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/instagram-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/mcpe-master-hack-unlimited-coins-download_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/coin-master-game-hacks_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/free-spins-coin-master-october-17-2021_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/websites-to-hack-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/buildtools-roblox-hack-2021_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/how-to-hack-into-peoples-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/how-to-hack-roblox-places_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/how-to-get-free-minecoins-in-minecraft_GM479516143.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/free-robux-by-completing-offers_GM431946152.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
stream_002_off0000322f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x322F 22932 bytes
SHA-256: 4429d68c87e6ae4197719a9a9d0295bef7e239bb61c8c9cb12257e2f54170f72
font_01_sfnt_off00006587.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6587 18472 bytes
SHA-256: e5740f0ed58e13a3d9045bf65c0b8a8b544c8b7064c4982ad243504192595383

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