Malicious PDF — malware analysis report

Static analysis result for SHA-256 8de9fa75197e914e…

MALICIOUS

PDF

46.6 KB Created: 2021-06-03 22:00:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 8942b714d37b3b52baff1c52bf2f09ea SHA-1: c9e7e5bf117f4c267f17c7202a099bf962f652d9 SHA-256: 8de9fa75197e914ee87b6e9169c398ed16519a8d6c42cdeecf95f86f41517703
82 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs that redirect to websites offering game hacks and currency generators, a common lure for phishing or malware distribution. The heuristic firings confirm the presence of these lures and the overall malicious nature of the PDF. No scripts were extracted, but the document body and heuristics strongly indicate a social engineering attack to drive users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

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/free-coin-master-coins-and-spins-game-hack PDF link annotation
    • http://www.js100.com/uploads/ckeditor/files/latest-free-spin-coin-master-daily_GM406889139.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/hack-coin-master-apk-358_GM406889139.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/roblox-hack-client_GM431946152.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/coin-master-hack-apk-link_GM406889139.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/can-i-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/pubg-700-uc_GM1330123889.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/get-free-food-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/minecraft-java-free-trial_GM479516143.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/free-roblox-boy-hair_GM431946152.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/free-robux-redeem-codes_GM431946152.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/is-minecraft-java-edition-free_GM479516143.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/free-robux-obby-2021_GM431946152.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/blox-pink-robux-free_GM431946152.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/free-robux-no-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/free-tiktok-followers-no-survey_GM835599320.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/how-to-download-minecraft-java-edition-for-free_GM479516143.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/coin-master-free-spin-whatsapp-group_GM406889139.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
stream_004_off00004f3a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F3A 30596 bytes
SHA-256: 39dfd262b714d5b7e002bbac51ee134ff09013f7b1361fa8a0add8e7a5d8ac7d
font_01_sfnt_off0000945d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x945D 18060 bytes
SHA-256: 11bd500b33c169b65e53ecddb4cd7ac7428d9a9bdc32d60ba78f45c9260aee9d

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