Malicious PDF — malware analysis report

Static analysis result for SHA-256 f998f8f2eacbccf3…

MALICIOUS

PDF

43.2 KB Created: 2021-06-04 04:04:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: eec24caccc6e97ea9271a81ff7c3c9b3 SHA-1: edcf76f37a3496b29df39f1fbe44df67d9987592 SHA-256: f998f8f2eacbccf3ef99890fee6a377a65b5a084a9a434f3d32f654cf723e92c
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for a "game hack" which redirects to the malicious URL https://netcdn.online/app/406889139/moon-active-game-hack. While no scripts were explicitly extracted, the presence of embedded URLs and the ML classifier's high confidence suggest a malicious intent to redirect the user to a potentially harmful site. The document body's obfuscated nature and the embedded URLs indicate a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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/moon-active-game-hack PDF link annotation
    • http://katalog.stikesmukla.ac.id/repository/rbx-sites_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/free-shields-coin-master_GM406889139.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/what-is-coin-master-app_GM406889139.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/get-roebucks-com_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/i-got-hacked-on-roblox_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/coin-master-free-coins-hack_GM406889139.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/claimrbx-free-robux_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/how-to-hack-in-roblox-prison-life_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/how-to-get-free-robux-without-email_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/hack-game-coin-master_GM406889139.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/free-mojang-account-with-minecraft_GM479516143.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/coin-master-free-spins-and-cards_GM406889139.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/coin-master-free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/coin-master-hack-without-verification-ios_GM406889139.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/free-robux-reddit_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/roblox-robux-generator_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/buy-robux-free_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_004_off00004fe3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4FE3 24944 bytes
SHA-256: fab5da8c69797880ce02a59419fa3ba4f7335c2176d209e1bbdd7898aef86ee8
font_01_sfnt_off000088b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88B6 17432 bytes
SHA-256: b07862f0f373366cf551fef15f89e8a11da93bc66f9809c3a9422b0bc64dfdde

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