Malicious PDF — malware analysis report

Static analysis result for SHA-256 8223b04a41f336a2…

MALICIOUS

PDF

46.5 KB Created: 2021-05-31 03:54:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 93d5e8ccb0dae4c7590996c86afadefe SHA-1: cfbfc7bb1cc967e572f3882085fde0ba8a14b8eb SHA-256: 8223b04a41f336a2c8a8eb1f02768f1307031ecf71a2bc9abb91c145a78ae1d4
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a prominent link disguised as a 'free generator / game hack' lure, which redirects to known malicious infrastructure. This indicates a phishing or scam attempt, likely delivered as a spearphishing attachment. While no scripts were directly extracted, the PDF structure and embedded URLs strongly suggest a malicious workflow designed to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7831

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 https://netcdn.xyz/app/431946152/claim-free-robux-game-hack In PDF document text
    • https://registration.inspiracio.hu/wp-content/uploads/fsqm-files/tiktok-follower-bot-free_GM835599320.pdfIn PDF document text
    • https://registration.inspiracio.hu/wp-content/uploads/fsqm-files/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • https://registration.inspiracio.hu/wp-content/uploads/fsqm-files/free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://registration.inspiracio.hu/wp-content/uploads/fsqm-files/free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
    • https://registration.inspiracio.hu/wp-content/uploads/fsqm-files/free-tiktok-hearts_GM835599320.pdfIn PDF document text
    • https://registration.inspiracio.hu/wp-content/uploads/fsqm-files/free-robux-2021_GM431946152.pdfIn PDF document text
    • https://registration.inspiracio.hu/wp-content/uploads/fsqm-files/coin-master-free-spins-link-today-new_GM406889139.pdfIn PDF document text
    • https://registration.inspiracio.hu/wp-content/uploads/fsqm-files/how-to-get-minecraft-for-free-on-ipad_GM479516143.pdfIn PDF document text
    • https://registration.inspiracio.hu/wp-content/uploads/fsqm-files/minecraft-svg-free_GM479516143.pdfIn PDF document text
    • https://registration.inspiracio.hu/wp-content/uploads/fsqm-files/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://registration.inspiracio.hu/wp-content/uploads/fsqm-files/is-minecraft-free-on-ps4_GM479516143.pdfIn PDF document text
    • https://registration.inspiracio.hu/wp-content/uploads/fsqm-files/is-minecraft-dungeons-free_GM479516143.pdfIn PDF document text
    • https://registration.inspiracio.hu/wp-content/uploads/fsqm-files/minecraft-bedrock-edition-free_GM479516143.pdfIn PDF document text
    • https://registration.inspiracio.hu/wp-content/uploads/fsqm-files/how-to-get-free-tiktok-followers-without-human-verification_GM835599320.pdfIn PDF document text
    • https://registration.inspiracio.hu/wp-content/uploads/fsqm-files/tiktok-viewer-free_GM835599320.pdfIn PDF document text
    • https://registration.inspiracio.hu/wp-content/uploads/fsqm-files/free-minecraft-server-hosting-24-7_GM479516143.pdfIn PDF document text
    • https://registration.inspiracio.hu/wp-content/uploads/fsqm-files/free-robux-come_GM431946152.pdfIn PDF document text
    • https://registration.inspiracio.hu/wp-content/uploads/fsqm-files/coin-master-free-spin-and-coins-links_GM406889139.pdfIn PDF document text
    • https://registration.inspiracio.hu/wp-content/uploads/fsqm-files/free-coin-master-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://registration.inspiracio.hu/wp-content/uploads/fsqm-files/tiktok-free-fans_GM835599320.pdfIn PDF document text
    • https://registration.inspiracio.hu/wp-content/uploads/fsqm-files/free-spins-for-coin-master-app_GM406889139.pdfIn PDF document text
    • https://registration.inspiracio.hu/wp-content/uploads/fsqm-files/minecraft-games-to-play-for-free_GM479516143.pdfIn PDF document text
    • https://registration.inspiracio.hu/wp-content/uploads/fsqm-files/coin-master-hack-https-coinms-net_GM406889139.pdfIn PDF document text
    • https://registration.inspiracio.hu/wp-content/uploads/fsqm-files/free-robux-no-offers_GM431946152.pdfIn PDF document text
    • https://registration.inspiracio.hu/wp-content/uploads/fsqm-files/tiktok-likes-for-free_GM835599320.pdfIn PDF document text
    • https://registration.inspiracio.hu/wp-content/uploads/fsqm-files/can-you-download-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004f7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4F7E 24560 bytes
SHA-256: b715592289a2f3177f965d9bdd1707465d0c93900c0da1b8f1a898827033ea6b
font_01_sfnt_off000087e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87E4 2896 bytes
SHA-256: a5a1f22acacfccde2ac38aca7f24c96c0c4f2e868ccad0105d7fbaa317d45b42
font_02_sfnt_off000091e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91E0 18696 bytes
SHA-256: 5cf9f9319346d61d0cee7eea738a99b5b91b4687cc89c43f6f5509699f250cff

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