Malicious PDF — malware analysis report

Static analysis result for SHA-256 337610d53bd87ffa…

MALICIOUS

PDF

33.5 KB Created: 2021-06-20 06:44:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 21e0cf8b2b0b002f2c9c94d50523b8ee SHA-1: 96b16511a7d3a4b98ccea9f632356ebaffa4a088 SHA-256: 337610d53bd87ffa44386ecf33d9bbdc2b14e769ff78f1de28d0087dc94f5324
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for a "free Robux generator" and includes numerous embedded URLs pointing to similar scam pages. The ML classifier strongly indicated maliciousness, and the document body explicitly contains a call to action to access a generator. This suggests the file is designed to trick users into visiting malicious sites, likely for credential harvesting or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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.co/app/431946152/how-to-get-free-robux-without-doing-a-human-verification-game-hack PDF link annotation
    • http://lib.fisipumt.ac.id//repository/roblox-free-login_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-free-promo-codes-thumbnaill_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/roblox-svg-free_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/hack-adopt-me-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/how-to-get-roebucks_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/free-account-roblox-with-robux_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-hack-in-roblox-booga-booga_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-coins-2021-coin-master-link_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/google-roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/free-coin-master-hack-no-verification_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-hack-a-roblox-chat_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-free-pants_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/minecraft-pe-hacks-2021_GM479516143.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/toolbox-apk_GM479516143.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/how-to-hack-coin-master-game_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/minecraft-book-collection_GM479516143.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-free-roblox-generations_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/one-piece-millenium-roblox-hack_GM431946152.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
font_00_sfnt_off00002ad7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2AD7 21860 bytes
SHA-256: b656db50c5df005a247b69c8a79845cea8f4d82135c912864f4cd9090a23f386
font_01_sfnt_off00005b40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B40 20032 bytes
SHA-256: 3418253e701f11bf753655dc223174caeb93f9cc886332ff5ffc8c872bdd2459

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