Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d8b533843aa673b…

MALICIOUS

PDF

48.5 KB Created: 2021-06-04 00:54:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: df45c6f51d3fb43fe78a664dbca0135d SHA-1: aad3495020df150cc9d65143dfd72f77be8d5e5d SHA-256: 0d8b533843aa673b405c861e2f31d0ef9d42122018f1e7848a1a80775e2584be
122 Risk Score

Malware Insights

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

The PDF document uses a lure of free game currency or hacks, presenting a fake CAPTCHA to trick users into clicking a malicious link. The embedded link directs to a URL associated with game hacks and potentially malicious redirects. While no scripts were explicitly extracted, the PDF structure and heuristics suggest an attempt to exploit user interaction for malicious purposes, likely leading to a second-stage download or exploit.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

Heuristics 5

  • 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.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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/431946152/get-me-robux-for-free-game-hack PDF link annotation
    • http://library.yamasi.ac.id/repository/is-it-possible-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/minecraft-pc-free_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/free-robux-no-human-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/free-robux-not-fake_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/how-long-is-the-minecraft-free-trial_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/roblox-prison-life-hack_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/free-robux-glitch_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/block-best-robux_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/coin-master-daily-free-spins-link-today-haktuts_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/pixies-gigantic-coin-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/freerobuxhack-us_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/roblox-game-free-download_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/coin-master-daily-free-spin-and-coin-link-haktuts_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/hack-coin-master-link_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/hack-version-of-coin-master_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/coin-master-spin-free_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/wurst-hacked-client_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/how-to-hack-golden-card-in-coin-master_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/minecraft-free-version-pc_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/moonactive-coin-master_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000532e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x532E 25188 bytes
SHA-256: 3b5542881b4457644af7af0f2d66d917bcd33eba73f8b96fbadce506f4269b76
font_01_sfnt_off00008df0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DF0 5596 bytes
SHA-256: 9a13c2580265a78e8a7257496a31ee0055738af7e20a5661c2902efe4bf05ce5
font_02_sfnt_off00009a98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A98 18312 bytes
SHA-256: 932e048767bb22e6267a54c454926b1d6572868c8ffb63cd4dd0c91a684054b1

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