Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f9be89d94cf5bad…

MALICIOUS

PDF

45.6 KB Created: 2021-06-11 07:02:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 941efd889f81bd1ba6f6bec20853d3f4 SHA-1: b0c564d624fadfbae95c2f5a8d69a76bf7dc4694 SHA-256: 5f9be89d94cf5bad6ac633b7d50a5355205713a704b9550f88296ac3245f18bd
160 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to malicious infrastructure, specifically promoting 'game hacks' and 'robux generators'. The primary link, https://netcdn.tw/app/431946152/robux-cheat-2021-game-hack, is identified as a malicious redirector. This suggests the document is part of a phishing campaign designed to lure users to potentially harmful sites, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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/robux-cheat-2021-game-hack In PDF document text
    • https://2020.innscidsp.com/wp-content/uploads/fsqm-files/btools-roblox-hack-2021-unpatchable_GM431946152.pdfIn PDF document text
    • https://2020.innscidsp.com/wp-content/uploads/fsqm-files/free-minecraft-premium-account_GM479516143.pdfIn PDF document text
    • https://2020.innscidsp.com/wp-content/uploads/fsqm-files/cheats-for-roblox-pokemon-brick-bronze_GM431946152.pdfIn PDF document text
    • https://2020.innscidsp.com/wp-content/uploads/fsqm-files/free-robux-no-download_GM431946152.pdfIn PDF document text
    • https://2020.innscidsp.com/wp-content/uploads/fsqm-files/free-roblox-cheat-codes_GM431946152.pdfIn PDF document text
    • https://2020.innscidsp.com/wp-content/uploads/fsqm-files/free-robux-generator-2021-download_GM431946152.pdfIn PDF document text
    • https://2020.innscidsp.com/wp-content/uploads/fsqm-files/robux-hack-giveaway_GM431946152.pdfIn PDF document text
    • https://2020.innscidsp.com/wp-content/uploads/fsqm-files/free-tiktok-accounts-and-passwords_GM835599320.pdfIn PDF document text
    • https://2020.innscidsp.com/wp-content/uploads/fsqm-files/trince3d-robux-hack-pastebin_GM431946152.pdfIn PDF document text
    • https://2020.innscidsp.com/wp-content/uploads/fsqm-files/unpatched-cheat-engine-roblox-pokemon_GM431946152.pdfIn PDF document text
    • https://2020.innscidsp.com/wp-content/uploads/fsqm-files/how-to-you-get-free-robux_GM431946152.pdfIn PDF document text
    • https://2020.innscidsp.com/wp-content/uploads/fsqm-files/free-catalog-roblox-no-survey_GM431946152.pdfIn PDF document text
    • https://2020.innscidsp.com/wp-content/uploads/fsqm-files/descargar-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • https://2020.innscidsp.com/wp-content/uploads/fsqm-files/free-robux-games-that-work_GM431946152.pdfIn PDF document text
    • https://2020.innscidsp.com/wp-content/uploads/fsqm-files/lol-roblox-cant-patch-the-free-robux_GM431946152.pdfIn PDF document text
    • https://2020.innscidsp.com/wp-content/uploads/fsqm-files/robux-freee-hack_GM431946152.pdfIn PDF document text
    • https://2020.innscidsp.com/wp-content/uploads/fsqm-files/how-to-get-followers-on-tiktok-for-free_GM835599320.pdfIn PDF document text
    • https://2020.innscidsp.com/wp-content/uploads/fsqm-files/bug-free-uniform-of-roblox_GM431946152.pdfIn PDF document text
    • https://2020.innscidsp.com/wp-content/uploads/fsqm-files/hack-all-computers-roblox_GM431946152.pdfIn PDF document text
    • https://2020.innscidsp.com/wp-content/uploads/fsqm-files/roblox-magnet-sim-hack-script_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005401.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5401 25264 bytes
SHA-256: cb88f5655111079f7f09609194dc9f9d0e803708d4e7c15019d2b12109c3fa5d
font_01_sfnt_off00008e1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E1C 18752 bytes
SHA-256: 298bfdc3e01b6beac2da09f23b61afedf52322be5626e280b318741363ddd82b

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