Malicious PDF — malware analysis report

Static analysis result for SHA-256 180c9c852d60409f…

MALICIOUS

PDF

46.2 KB Created: 2021-06-03 22:54:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 6eea733fbbe592caa3ca74c6c7d5c768 SHA-1: 92c0b3f751f9a88026e47dc66c459b5ad8071188 SHA-256: 180c9c852d60409f7c6a33faa7a3524c28e1e9cc760c2315798b37bc38f98bb3
200 Risk Score

Malware Insights

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

This PDF document employs a fake CAPTCHA and a download button lure to trick users into clicking a malicious link. The primary link, https://netcdn.online/app/431946152/roblox-jailbreak-hack-download-game-hack, is associated with known malicious redirector infrastructure. The document's content and heuristics suggest it is designed to deliver a second-stage payload, likely a game hack or cheat, which is a common social engineering tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

Heuristics 5

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/roblox-jailbreak-hack-download-game-hack In PDF document text
    • http://e-library.stienobel-indonesia.ac.id//repository/robux-best_GM431946152.pdfIn PDF document text
    • http://e-library.stienobel-indonesia.ac.id/repository/10-robux_GM431946152.pdfIn PDF document text
    • http://e-library.stienobel-indonesia.ac.id/repository/coin-master-free-coins_GM406889139.pdfIn PDF document text
    • http://e-library.stienobel-indonesia.ac.id/repository/hack-mod-coin-master_GM406889139.pdfIn PDF document text
    • http://e-library.stienobel-indonesia.ac.id//repository/free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://e-library.stienobel-indonesia.ac.id/repository/minecraft-pe-free-ios_GM479516143.pdfIn PDF document text
    • http://e-library.stienobel-indonesia.ac.id//repository/free-roblox-gift-card-codes-2021_GM431946152.pdfIn PDF document text
    • http://e-library.stienobel-indonesia.ac.id//repository/master-coins-free_GM406889139.pdfIn PDF document text
    • http://e-library.stienobel-indonesia.ac.id//repository/how-to-get-free-daily-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://e-library.stienobel-indonesia.ac.id//repository/20-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://e-library.stienobel-indonesia.ac.id/repository/microsoft-bing-robux_GM431946152.pdfIn PDF document text
    • http://e-library.stienobel-indonesia.ac.id/repository/freespinandcoin_GM406889139.pdfIn PDF document text
    • http://e-library.stienobel-indonesia.ac.id//repository/coin-master-hack-ios-2021_GM406889139.pdfIn PDF document text
    • http://e-library.stienobel-indonesia.ac.id/repository/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://e-library.stienobel-indonesia.ac.id/repository/master-coin-hack-apk_GM406889139.pdfIn PDF document text
    • http://e-library.stienobel-indonesia.ac.id/repository/bad-minecraft-free_GM479516143.pdfIn PDF document text
    • http://e-library.stienobel-indonesia.ac.id/repository/grab-points-login_GM431946152.pdfIn PDF document text
    • http://e-library.stienobel-indonesia.ac.id/repository/coin-master-free-cards-2021_GM406889139.pdfIn PDF document text
    • http://e-library.stienobel-indonesia.ac.id/repository/free-daily-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://e-library.stienobel-indonesia.ac.id/repository/games-that-give-free-robux_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
font_00_sfnt_off00005062.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5062 27908 bytes
SHA-256: 666ff97452fcbb66fb117b7daefab8f46e519679e42e4d1976e079fc540cceeb
font_01_sfnt_off0000901d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x901D 18972 bytes
SHA-256: 261da8cecf88d9fe7cdfdd42a26ac06d4c96d8a11aebf729db611f6a559eb8d5

Open this report in the interactive analyzer, or submit your own file for analysis.