Malicious PDF — malware analysis report

Static analysis result for SHA-256 27447310af9b4900…

MALICIOUS

PDF

35.4 KB Created: 2021-06-26 16:53:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 9fdfe6a43284f196212dc10cc56f84cb SHA-1: 2f3f3edc4eb644cfdf0c13996da51c9938eaeb0d SHA-256: 27447310af9b49009fae9a8a887fed527d3319e988d96c89ca23c173c8ec721e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to malicious redirectors, specifically advertising 'free generators' and 'game hacks' for popular games like Roblox. The primary lure URL is http://netcdn.co/app/431946152/free-roblox-account-with-ultimate-driving-cars-game-hack, which is flagged as malicious. The document's content and embedded links strongly suggest a phishing or scam campaign designed to lead users to potentially harmful websites. No scripts were extracted, but the PDF structure and embedded URLs are sufficient to infer malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • 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.
  • 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 http://netcdn.co/app/431946152/free-roblox-account-with-ultimate-driving-cars-game-hack In PDF document text
    • https://www.choidy.ch/wp-content/uploads/fsqm-files/free-robux-giveaway_GM431946152.pdfIn PDF document text
    • https://www.choidy.ch/wp-content/uploads/fsqm-files/hack-on-ulitimate-driving-roblox_GM431946152.pdfIn PDF document text
    • https://www.choidy.ch/wp-content/uploads/fsqm-files/how-to-hack-retail-tycoon-roblox_GM431946152.pdfIn PDF document text
    • https://www.choidy.ch/wp-content/uploads/fsqm-files/hackear-roblox-cr7_GM431946152.pdfIn PDF document text
    • https://www.choidy.ch/wp-content/uploads/fsqm-files/hack-buy-robux_GM431946152.pdfIn PDF document text
    • https://www.choidy.ch/wp-content/uploads/fsqm-files/lazy-blocks-free-robux_GM431946152.pdfIn PDF document text
    • https://www.choidy.ch/wp-content/uploads/fsqm-files/free-account-generator-roblox-with-robux_GM431946152.pdfIn PDF document text
    • https://www.choidy.ch/wp-content/uploads/fsqm-files/how-to-hack-youtubers-roblox-password_GM431946152.pdfIn PDF document text
    • https://www.choidy.ch/wp-content/uploads/fsqm-files/coin-master-free-spin-ml_GM406889139.pdfIn PDF document text
    • https://www.choidy.ch/wp-content/uploads/fsqm-files/roblox-cbro-free-money-hack_GM431946152.pdfIn PDF document text
    • https://www.choidy.ch/wp-content/uploads/fsqm-files/can-you-make-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • https://www.choidy.ch/wp-content/uploads/fsqm-files/free-skin-roblox-download_GM431946152.pdfIn PDF document text
    • https://www.choidy.ch/wp-content/uploads/fsqm-files/free-robux-no-survey-2021-no-verification_GM431946152.pdfIn PDF document text
    • https://www.choidy.ch/wp-content/uploads/fsqm-files/roblox-free-robux-codes_GM431946152.pdfIn PDF document text
    • https://www.choidy.ch/wp-content/uploads/fsqm-files/free-roblox-pikachu-accessories-2021_GM431946152.pdfIn PDF document text
    • https://www.choidy.ch/wp-content/uploads/fsqm-files/cheat-roblox-lumber-tycoon-2-btools_GM431946152.pdfIn PDF document text
    • https://www.choidy.ch/wp-content/uploads/fsqm-files/roblox-hack-for-robux-kredi_GM431946152.pdfIn PDF document text
    • https://www.choidy.ch/wp-content/uploads/fsqm-files/how-to-claim-free-robux_GM431946152.pdfIn PDF document text
    • https://www.choidy.ch/wp-content/uploads/fsqm-files/roblox-mods-free_GM431946152.pdfIn PDF document text
    • https://www.choidy.ch/wp-content/uploads/fsqm-files/roblox-studio-install-free_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_off000030cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30CF 22584 bytes
SHA-256: 5d9b7bdfeca370a0b9931f47b9f1273bd75c2ac2dda57a86df61142ec0e9ff25
font_01_sfnt_off000062d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62D8 19920 bytes
SHA-256: 8bb96ba32d572b31021d86fdf654993b850c3ce32382f998c3211bc1c907e9d0