Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b1bd09c8a6eda17…

MALICIOUS

PDF

46.5 KB Created: 2021-06-08 16:51:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 0dbe50ae6063bbe40fad6c1d5040cf28 SHA-1: 7403d9726fe3ca399fbb9f79c7dc373cf8e4ea58 SHA-256: 0b1bd09c8a6eda1742a53440c5d681868d232917d7645d998dc0ff1c8f97785a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains a critical heuristic firing for a malicious redirector link, specifically advertising a 'free generator / game hack'. The embedded URL leads to a known malicious redirector, likely intended to deliver a second-stage payload. The document body, though heavily obfuscated, contains references to game hacks and the malicious URL, reinforcing the lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

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/roblox-hack-no-download-no-survey-no-password-2021-game-hack In PDF document text
    • https://speakonline.dk/wp-content/uploads/fsqm-files/free-roblox-injector-v3rmillion_GM431946152.pdfIn PDF document text
    • https://speakonline.dk/wp-content/uploads/fsqm-files/minecraft-on-computer-free_GM479516143.pdfIn PDF document text
    • https://speakonline.dk/wp-content/uploads/fsqm-files/free-minecraft-capes_GM479516143.pdfIn PDF document text
    • https://speakonline.dk/wp-content/uploads/fsqm-files/roblox-hack-2021_GM431946152.pdfIn PDF document text
    • https://speakonline.dk/wp-content/uploads/fsqm-files/minecraft-bedrock-edition-download-pc-free_GM479516143.pdfIn PDF document text
    • https://speakonline.dk/wp-content/uploads/fsqm-files/how-does-people-uses-hacks-in-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • https://speakonline.dk/wp-content/uploads/fsqm-files/roblox-booga-booga-hack-download-free_GM431946152.pdfIn PDF document text
    • https://speakonline.dk/wp-content/uploads/fsqm-files/https-www-blox-land-free-robux_GM431946152.pdfIn PDF document text
    • https://speakonline.dk/wp-content/uploads/fsqm-files/roblox-team-changer-hack_GM431946152.pdfIn PDF document text
    • https://speakonline.dk/wp-content/uploads/fsqm-files/earn-free-robux_GM431946152.pdfIn PDF document text
    • https://speakonline.dk/wp-content/uploads/fsqm-files/roblox-synapse-cheat_GM431946152.pdfIn PDF document text
    • https://speakonline.dk/wp-content/uploads/fsqm-files/minecraft-pc-free_GM479516143.pdfIn PDF document text
    • https://speakonline.dk/wp-content/uploads/fsqm-files/minecraft-pe-free-download_GM479516143.pdfIn PDF document text
    • https://speakonline.dk/wp-content/uploads/fsqm-files/how-to-get-free-obc-on-roblox-test-site_GM431946152.pdfIn PDF document text
    • https://speakonline.dk/wp-content/uploads/fsqm-files/roblox-skywars-wins-hack_GM431946152.pdfIn PDF document text
    • https://speakonline.dk/wp-content/uploads/fsqm-files/best-roblox-hacks-for-unfiltered-games_GM431946152.pdfIn PDF document text
    • https://speakonline.dk/wp-content/uploads/fsqm-files/roblox-i-dont-feel-so-good-hacks_GM431946152.pdfIn PDF document text
    • https://speakonline.dk/wp-content/uploads/fsqm-files/minecraft-windows-10-free-with-java_GM479516143.pdfIn PDF document text
    • https://speakonline.dk/wp-content/uploads/fsqm-files/how-to-hack-roblox-accounts-on-mac_GM431946152.pdfIn PDF document text
    • https://speakonline.dk/wp-content/uploads/fsqm-files/minecraft-java-edition-download-free_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_off000055da.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x55DA 24812 bytes
SHA-256: be9ee839e803bbdcd7fdc60ee1061aa0faea4446329e3c598a978e9f4549c2fa
font_01_sfnt_off00008ef7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EF7 19680 bytes
SHA-256: 936b449b2f34d47b94ad591915ba847ede6c5f25b2c504825b415945281ef67a

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