Malicious PDF — malware analysis report

Static analysis result for SHA-256 fcdb561605830436…

MALICIOUS

PDF

35.8 KB Created: 2021-07-03 21:06:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: e2d01619145298716dcbfd482d867312 SHA-1: b0b8e16da297efbe3a629ce7d33c6de6a13ccc4e SHA-256: fcdb56160583043680ecea55cbf22fc46dd6d6cf8d85f6764236a4eb4dbdd1bd
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to websites that claim to offer game hacks, such as for Roblox. The primary link, http://netcdn.tw/app/431946152/how-to-hack-roblox-accounts-on-phone-2021-game-hack, is flagged as a lure for game hacks. The document's structure and embedded links suggest an attempt to trick users into visiting malicious sites, likely for malware distribution or phishing. No scripts were extracted, but the PDF's nature points towards social engineering.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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.tw/app/431946152/how-to-hack-roblox-accounts-on-phone-2021-game-hack PDF link annotation
    • http://lib.fisipumt.ac.id//repository/tiktok-free-likes-and-followers-apk-download_GM835599320.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/view-cam-hack-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-hack-2021_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/minecraft-windows-10-edition-hacks_GM479516143.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-get-free-robux-in-2021_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-roblox-selena-quintanilla_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/pokemon-go-free-item-bag_GM1094591345.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-hack-roblox-for-robux-script_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/pubg-uc-via-login_GM1330123889.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-adidas-hoodie-free_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-phantom-forces-all-free_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-roblox-decals_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/coin-master-hack-apk-april-12-2021_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-spin-link-in-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-get-free-robux-no-download-on-ipad_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-robux-generator-no-survey-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/coin-master-collect-today-free-spin_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-hack-ga_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-do-you-want-free-robux-ad_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/game-guardian-roblox-money-hack_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_off0000323d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x323D 22636 bytes
SHA-256: be1aaab209029bd5291f3ee7a2cbf36ebd6d1ebaad7af16819d75754f51e71de
font_01_sfnt_off00006484.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6484 19788 bytes
SHA-256: e48b3e34ff3a21a02db51fef543f00df2e8cbdbd7d9ff5be73dc5f5f5eb1ae47

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