Malicious PDF — malware analysis report

Static analysis result for SHA-256 bfca1cb8528df9be…

MALICIOUS

PDF

44.6 KB Created: 2021-05-30 23:57:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 89aa569d5fbc52cddde424c67efe65db SHA-1: 3f11008d97079683f2930f1565ad47d746ea7348 SHA-256: bfca1cb8528df9be1e279267892a14af3965537335d3e09b5a6f7a2ccce3a0ec
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains embedded links that redirect to a malicious domain, masquerading as a 'free generator' or 'game hack'. The document body and heuristics indicate a lure designed to entice users to click these links, likely leading to further malware or phishing. The primary malicious link identified is https://netcdn.xyz/app/431946152/give-me-free-robux-game-hack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9580

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/give-me-free-robux-game-hack In PDF document text
    • http://thinkpro.ca/wp-content/uploads/fsqm-files/huskybuckscom-free-robux_GM431946152.pdfIn PDF document text
    • http://thinkpro.ca/wp-content/uploads/fsqm-files/roblox-speed-hack_GM431946152.pdfIn PDF document text
    • http://thinkpro.ca/wp-content/uploads/fsqm-files/free-tiktok-likes-trial_GM835599320.pdfIn PDF document text
    • http://thinkpro.ca/wp-content/uploads/fsqm-files/free-minecraft-resource-packs_GM479516143.pdfIn PDF document text
    • http://thinkpro.ca/wp-content/uploads/fsqm-files/ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://thinkpro.ca/wp-content/uploads/fsqm-files/free-robux-no-verify_GM431946152.pdfIn PDF document text
    • http://thinkpro.ca/wp-content/uploads/fsqm-files/free-robux-for-kids_GM431946152.pdfIn PDF document text
    • http://thinkpro.ca/wp-content/uploads/fsqm-files/minecraft-server-hacks_GM479516143.pdfIn PDF document text
    • http://thinkpro.ca/wp-content/uploads/fsqm-files/coin-master-hacks_GM406889139.pdfIn PDF document text
    • http://thinkpro.ca/wp-content/uploads/fsqm-files/haktuts-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://thinkpro.ca/wp-content/uploads/fsqm-files/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://thinkpro.ca/wp-content/uploads/fsqm-files/minecraft-account-hacked_GM479516143.pdfIn PDF document text
    • http://thinkpro.ca/wp-content/uploads/fsqm-files/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://thinkpro.ca/wp-content/uploads/fsqm-files/minecraft-free-computer-game_GM479516143.pdfIn PDF document text
    • http://thinkpro.ca/wp-content/uploads/fsqm-files/minecraft-marketplace-free_GM479516143.pdfIn PDF document text
    • http://thinkpro.ca/wp-content/uploads/fsqm-files/minecraft-pe-hacks_GM479516143.pdfIn PDF document text
    • http://thinkpro.ca/wp-content/uploads/fsqm-files/free-followers-for-tiktok_GM835599320.pdfIn PDF document text
    • http://thinkpro.ca/wp-content/uploads/fsqm-files/freer-pro-tiktok-fans_GM835599320.pdfIn PDF document text
    • http://thinkpro.ca/wp-content/uploads/fsqm-files/free-tiktok-followers-no-human-verification-or-survey_GM835599320.pdfIn PDF document text
    • http://thinkpro.ca/wp-content/uploads/fsqm-files/tiktok-views-free_GM835599320.pdfIn PDF document text
    • http://thinkpro.ca/wp-content/uploads/fsqm-files/free-tiktok-likes-2021_GM835599320.pdfIn PDF document text
    • http://thinkpro.ca/wp-content/uploads/fsqm-files/lazyblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://thinkpro.ca/wp-content/uploads/fsqm-files/roblox-hack-tool_GM431946152.pdfIn PDF document text
    • http://thinkpro.ca/wp-content/uploads/fsqm-files/how-to-get-free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • http://thinkpro.ca/wp-content/uploads/fsqm-files/roblox-jailbreak-hack_GM431946152.pdfIn PDF document text
    • http://thinkpro.ca/wp-content/uploads/fsqm-files/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://thinkpro.ca/wp-content/uploads/fsqm-files/tiktok-likes-free_GM835599320.pdfIn PDF document text
    • http://thinkpro.ca/wp-content/uploads/fsqm-files/how-to-get-minecraft-for-free-on-ipad_GM479516143.pdfIn PDF document text
    • http://thinkpro.ca/wp-content/uploads/fsqm-files/free-tiktok-views-no-verification_GM835599320.pdfIn PDF document text
    • http://thinkpro.ca/wp-content/uploads/fsqm-files/robux-free-2021_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_003_off0000513c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x513C 25020 bytes
SHA-256: f622fea585ca7263a781160888e42dddf813b0f699d6fcf8772ed1d2c9978c2f
font_01_sfnt_off00008ac7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AC7 18444 bytes
SHA-256: 68319dbf483afe81c5a4de3b3f5290fc223d358c0f75f000dd988daf46eb7eae