Malicious PDF — malware analysis report

Static analysis result for SHA-256 aadaeb227fc46d9c…

MALICIOUS

PDF

46.0 KB Created: 2021-06-08 14:00:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: e40ff913c331c6cc86f4b5e12383a200 SHA-1: a984996347b06735dc386775e803e2f4a55aafa1 SHA-256: aadaeb227fc46d9c7e9cbb540492d3ffd04d52c07ea6236ead12f0b8c004cf61
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to websites offering game hacks and generators, a common lure for phishing or malware distribution. The heuristic 'SE_FAKE_CAPTCHA' indicates the document may present a fake verification prompt to trick users into interacting further. While no scripts were directly extracted, the PDF structure and embedded links suggest an attempt to redirect users to malicious content, likely for initial access.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

Heuristics 6

  • 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
  • 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 https://netcdn.tw/app/431946152/cheat-roblox-menu-game-hack PDF link annotation
    • http://aeridefense.com/image/data/files/coin-master-free-spins-without-verification_GM406889139.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/coin-master-hack-tool-ios_GM406889139.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/free-robux-scams_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/free-coin-master-hacks_GM406889139.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/how-to-get-free-roebucks-in-roblox_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/minecraft-diamond-finder-hack_GM479516143.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/how-to-get-free-robux-on-chromebook_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/free-robux-no-survey-or-human-verification_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/coin-master-free-coins--spins_GM406889139.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/coin-master-free-gold-cards_GM406889139.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/how-to-download-minecraft-for-free-on-windows-10_GM479516143.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/free-coins-and-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/what-is-robux-in-roblox_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/roblox-sexually-abused_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/how-to-get-free-cards-for-coin-master_GM406889139.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/free-robux-please_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/how-can-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/coin-master-hack-activegamer_GM406889139.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/how-to-hack-roblox-accounts-on-phone_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
stream_004_off00005094.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5094 28100 bytes
SHA-256: 0589e01ea08f15062026d331bef547335f3dbccf1b79b902d8859426198b7783
font_01_sfnt_off00009028.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9028 18616 bytes
SHA-256: 67df34243644409a5c53f74ed25a839984c4d65820d78abd92435b65debcacf9

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