Malicious PDF — malware analysis report

Static analysis result for SHA-256 88d201e0014cb494…

MALICIOUS

PDF

51.9 KB Created: 2021-06-08 13:26:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: eef5c80bfe709dfc57c16c89875cd790 SHA-1: e30042f0456f87812735c8526876573afabd5405 SHA-256: 88d201e0014cb494ef0c7b47d12a2edea6c0e091c5e2d403cd729cce9a39ad31
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, disguised as 'free generator / game hack' lures. The primary redirector URL is https://netcdn.tw/app/431946152/free-robux-espaol-game-hack. While no scripts were extracted, the document's structure and embedded links strongly indicate a phishing or scam attempt designed to lead users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9862

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.tw/app/431946152/free-robux-espaol-game-hack In PDF document text
    • http://thinkpro.ca/wp-content/uploads/fsqm-files/roblox-phantom-forces-cheat-engine_GM431946152.pdfIn PDF document text
    • http://thinkpro.ca/wp-content/uploads/fsqm-files/cheats-to-become-bear-on-bear-roblox_GM431946152.pdfIn PDF document text
    • http://thinkpro.ca/wp-content/uploads/fsqm-files/robux-free-2021_GM431946152.pdfIn PDF document text
    • http://thinkpro.ca/wp-content/uploads/fsqm-files/weight-lifting-simulator-roblox-hack_GM431946152.pdfIn PDF document text
    • http://thinkpro.ca/wp-content/uploads/fsqm-files/robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://thinkpro.ca/wp-content/uploads/fsqm-files/gain-free-bux-for-roblox-free-download-2021_GM431946152.pdfIn PDF document text
    • http://thinkpro.ca/wp-content/uploads/fsqm-files/try-minecraft-free_GM479516143.pdfIn PDF document text
    • http://thinkpro.ca/wp-content/uploads/fsqm-files/how-do-i-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://thinkpro.ca/wp-content/uploads/fsqm-files/roblox-screen-recorder-free_GM431946152.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/how-to-get-free-robux-and-free-tix-on-roblox_GM431946152.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/cheat-roblox-superpower-training-simulator-2021_GM431946152.pdfIn PDF document text
    • http://thinkpro.ca/wp-content/uploads/fsqm-files/how-to-get-hacks-in-jailbreak-roblox_GM431946152.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/robuxlove-net-free-robux_GM431946152.pdfIn PDF document text
    • http://thinkpro.ca/wp-content/uploads/fsqm-files/get-free-robux-today-no-verification_GM431946152.pdfIn PDF document text
    • http://thinkpro.ca/wp-content/uploads/fsqm-files/roblox-hack-account-2021_GM431946152.pdfIn PDF document text
    • http://thinkpro.ca/wp-content/uploads/fsqm-files/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://thinkpro.ca/wp-content/uploads/fsqm-files/how-to-hack-back-into-your-roblox-account_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_004_off00005213.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5213 40156 bytes
SHA-256: 51d1887d55af7899d25dc01dcf04070c8633804131e2be02c217b18badcfbc89
font_01_sfnt_off0000a868.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA868 18492 bytes
SHA-256: 64278a522b154940eceac0120d4e079f9c06fb61c4fffb53ef1645199e3db0b1

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