Malicious PDF — malware analysis report

Static analysis result for SHA-256 1be91ab6d48dcd5b…

MALICIOUS

PDF

34.4 KB Created: 2021-06-26 11:39:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 589d0db06f2a61979ecb89303a9c0927 SHA-1: 574152fed5e0bccfeb00f3d561d99cb4b0b9a882 SHA-256: 1be91ab6d48dcd5b85addd26b8461dedd59e8e7429dd77282587816f0b2095ed
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document contains a lure for game hacks, specifically mentioning 'Roblox Free Unlimited Robux'. It embeds multiple URLs that redirect to sites offering such cheats. The primary malicious URL identified is http://netcdn.co/app/431946152/roblox-free-unlimited-robux-game-hack, which likely serves as a landing page for a phishing or malware distribution campaign. The ML classifier strongly flagged this PDF as malicious.

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.co/app/431946152/roblox-free-unlimited-robux-game-hack PDF link annotation
    • http://lib.fisipumt.ac.id//repository/coin-master-game-free-spin_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-free-rbx-2021-june-hack_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/coin-master-hack-spins-and-coins-unlimited-free_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/coin-master-free-spins-link-haktuts_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-coins-coin-master-link_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-hack-apk-35-18_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/robuxlove-net-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/easy-points-gg_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-hack-ios-without-verification_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/broken-bones-5-roblox-hack_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/como-generar-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-minecraft-codes-2021_GM479516143.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/roblox-avatar-free_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-minecraft-account_GM479516143.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-get-free-spins-on-coin-master-2021_GM406889139.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
font_00_sfnt_off00002f50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F50 22132 bytes
SHA-256: cc14b1e10cbff12e0cac927e0edada15d2f08fc6dab12f95696b2a4c52703241
font_01_sfnt_off00006068.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6068 19448 bytes
SHA-256: 5ad5343ba344198b939b56e966fc91d7298457ab339e6271328c82c92c42edeb

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