Malicious PDF — malware analysis report

Static analysis result for SHA-256 19b7410d6968da43…

MALICIOUS

PDF

50.8 KB Created: 2021-05-31 09:00:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 1e5bbd146cfa5cec2041dda6a7b93825 SHA-1: 0aa48240904b5d869fb627596d27476eb61df400 SHA-256: 19b7410d6968da432e732d7e7ba52864a624a82aa599190b96aa8e1db8804d07
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for a game hack redirect lure, pointing to a known malicious URL. The document body, though heavily obfuscated, contains references to 'Roblox Free Items Hack 2021' and the malicious URL, reinforcing the lure. The ML classifier also flagged this PDF with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9365

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/roblox-free-items-hack-2021-game-hack In 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-coin-master-spins-and-coins_GM406889139.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-robux-no-offers_GM431946152.pdfIn PDF document text
    • https://registration.inspiracio.hu/wp-content/uploads/fsqm-files/robux-hack-generator_GM431946152.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/claim-free-robux_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/minecraft-svg-free_GM479516143.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-robux-without-downloading-apps_GM431946152.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/tiktok-follower-bot-free_GM835599320.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/tiktok-free-fans_GM835599320.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-hack-a-minecraft-server_GM479516143.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/free-robux-gift-card_GM431946152.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/coin-master-free-spins-link-2021-today_GM406889139.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/coin-master-hack-https-coinms-net_GM406889139.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/is-minecraft-dungeons-free_GM479516143.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/get-free-robux-2021_GM431946152.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/can-you-download-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://registration.inspiracio.hu/wp-content/uploads/fsqm-files/is-minecraft-free-on-ps4_GM479516143.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_off00005d8d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5D8D 28780 bytes
SHA-256: 4d910b807ca18f0c4261a24074b1a40eb743b96e08ad0714c324cf2a96e61cea
font_01_sfnt_off0000a0fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA0FB 19112 bytes
SHA-256: 8fea664099d2ab43e8601d9dc115dedc087d152a64aa6c24073c183547f93db4