Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd2a5ca991467951…

MALICIOUS

PDF

34.7 KB Created: 2021-06-22 05:57:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: ccf8252a6bd9911c216de99c039c07c2 SHA-1: fef68f148548113cc416f538b99ea46dec227d4b SHA-256: fd2a5ca9914679514cc92f54162c53c54378c6d4d2724e4c07bb6305de8930cd
102 Risk Score

Malware Insights

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

The PDF document contains multiple links and text referencing game hacks and free virtual currency, specifically targeting popular games like Roblox. The primary link, http://netcdn.co/app/431946152/how-to-get-more-robux-hack-game-hack, is flagged as a high-risk lure. While no scripts were explicitly extracted, the PDF structure and embedded links suggest a malicious workflow designed to redirect users to potentially harmful sites, likely for credential harvesting or malware delivery.

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.co/app/431946152/how-to-get-more-robux-hack-game-hack PDF link annotation
    • http://www.mostraining.co.za/images/roblox-free-robux-obby_GM431946152.pdfIn PDF document text
    • http://www.mostraining.co.za/images/how-to-hack-a-roblox-account-easy_GM431946152.pdfIn PDF document text
    • http://www.mostraining.co.za/images/how-to-get-minecraft-for-free-on-iphone_GM479516143.pdfIn PDF document text
    • http://www.mostraining.co.za/images/hack-coin-master-apk-31_GM406889139.pdfIn PDF document text
    • http://www.mostraining.co.za/images/free-tiktok-likes_GM835599320.pdfIn PDF document text
    • http://www.mostraining.co.za/images/btools-roblox-hack-2021-unpatchable_GM431946152.pdfIn PDF document text
    • http://www.mostraining.co.za/images/boxing-simulator-2-roblox-free-double-weight-lifting_GM431946152.pdfIn PDF document text
    • http://www.mostraining.co.za/images/roblox-free-clothes-hack_GM431946152.pdfIn PDF document text
    • http://www.mostraining.co.za/images/free-robux-just-enter-password_GM431946152.pdfIn PDF document text
    • http://www.mostraining.co.za/images/roblox-hack-no-survay_GM431946152.pdfIn PDF document text
    • http://www.mostraining.co.za/images/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://www.mostraining.co.za/images/roblox-vehicle-simulator-script-hack_GM431946152.pdfIn PDF document text
    • http://www.mostraining.co.za/images/the-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.mostraining.co.za/images/play-minecraft-pocket-edition-for-free_GM479516143.pdfIn PDF document text
    • http://www.mostraining.co.za/images/free-robux-with-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.mostraining.co.za/images/how-to-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.mostraining.co.za/images/free-spins-coin-master-legit_GM406889139.pdfIn PDF document text
    • http://www.mostraining.co.za/images/play-minecraft-online-free_GM479516143.pdfIn PDF document text
    • http://www.mostraining.co.za/images/hack-troll-roblox_GM431946152.pdfIn PDF document text
    • http://www.mostraining.co.za/images/is-tiktok-free_GM835599320.pdfIn PDF document text
    • https://www.roblox.com/.IIn 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_off000030c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30C8 22288 bytes
SHA-256: 67e777bcce61bb23102612b8922c7deb0fb42ed052a6c76afdd5b0c18eb48748
font_01_sfnt_off000061ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61FF 19184 bytes
SHA-256: 703097556292cc66be5676d3b16fd33bc33245177fa29c542c0dba92a3929f10

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