Malicious PDF — malware analysis report

Static analysis result for SHA-256 947de7cc9034a5f9…

MALICIOUS

PDF

46.0 KB Created: 2021-05-16 09:07:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 5424158cb165d83b27765f61785190a9 SHA-1: 063705de1c936134bcb01a852637a75aacd11926 SHA-256: 947de7cc9034a5f9f271a50d55ff289a69279fd286ae7a8ed90cc01f58f438c2
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a high-severity heuristic firing for a game hack lure, directing users to a suspicious URL. The document body, though partially corrupted, contains references to game hacks and the same URL. This suggests the PDF is designed to trick users into visiting a site that likely hosts malware or phishing content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9432

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/406889139/coin-master-hack-cheat-engine-game-hack PDF link annotation
    • http://malarvadibalasangam.org/ckfinder/userfiles/files/coin-master-attack-madness-hack_GM406889139.pdfIn PDF document text
    • http://malarvadibalasangam.org/ckfinder/userfiles/files/how-to-play-minecraft-with-friends-for-free_GM479516143.pdfIn PDF document text
    • http://malarvadibalasangam.org/ckfinder/userfiles/files/robux-for-offers_GM431946152.pdfIn PDF document text
    • http://malarvadibalasangam.org/ckfinder/userfiles/files/can-i-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://malarvadibalasangam.org/ckfinder/userfiles/files/fbchampion_GM406889139.pdfIn PDF document text
    • http://malarvadibalasangam.org/ckfinder/userfiles/files/coin-master-hack-ios-no-verification_GM406889139.pdfIn PDF document text
    • http://malarvadibalasangam.org/ckfinder/userfiles/files/free-25-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • http://malarvadibalasangam.org/ckfinder/userfiles/files/download-minecraft-free-hiapphere_GM479516143.pdfIn PDF document text
    • http://malarvadibalasangam.org/ckfinder/userfiles/files/coin-master-hacks-free-spins_GM406889139.pdfIn PDF document text
    • http://malarvadibalasangam.org/ckfinder/userfiles/files/coin-master-hack-spins-free_GM406889139.pdfIn PDF document text
    • http://malarvadibalasangam.org/ckfinder/userfiles/files/coin-master-hack-that-actually-works_GM406889139.pdfIn PDF document text
    • http://malarvadibalasangam.org/ckfinder/userfiles/files/free-minecraft-hosting-24-7_GM479516143.pdfIn PDF document text
    • http://malarvadibalasangam.org/ckfinder/userfiles/files/hack-coin-master-no-survey_GM406889139.pdfIn PDF document text
    • http://malarvadibalasangam.org/ckfinder/userfiles/files/coin-master-free-spins-link-today-new_GM406889139.pdfIn PDF document text
    • http://malarvadibalasangam.org/ckfinder/userfiles/files/how-do-you-get-free-food-on-coin-master_GM406889139.pdfIn PDF document text
    • http://malarvadibalasangam.org/ckfinder/userfiles/files/coin-master-free-spins-reddit_GM406889139.pdfIn PDF document text
    • http://malarvadibalasangam.org/ckfinder/userfiles/files/coin-master-hack-version-download-2021-android_GM406889139.pdfIn PDF document text
    • http://malarvadibalasangam.org/ckfinder/userfiles/files/get-robux-today_GM431946152.pdfIn PDF document text
    • http://malarvadibalasangam.org/ckfinder/userfiles/files/free-robux-gift-card-generator_GM431946152.pdfIn PDF document text
    • http://malarvadibalasangam.org/ckfinder/userfiles/files/free-executors-for-roblox_GM431946152.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_003_off00004d63.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4D63 24772 bytes
SHA-256: 9e44468e777e0a5b96fb1f5fbca6e70d037fb8ab0b2d964bf9807d465896cc8e
font_01_sfnt_off00008596.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8596 3380 bytes
SHA-256: 1dd933c112880b232546f3aab6a17784a8f412d39fd551cc6eb31c5a04c3ce57
font_02_sfnt_off0000917e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x917E 18172 bytes
SHA-256: e3f41997ae9b51af751d949b3a003807251391f9a40890f8515a7dcb8e6b4f46

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