Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d457d24d6a9bba4…

MALICIOUS

PDF

35.8 KB Created: 2021-07-04 04:00:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 1a228fc7569690c4c489a8f72ebdf1c7 SHA-1: bdd654c500b89d740e53c0b14b1e8c0e0c387a81 SHA-256: 1d457d24d6a9bba4eca05afbdbb9a69a3b37069d5d2b7c95d6800901e6011701
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to a malicious domain, masquerading as a 'free Robux hack'. The heuristic firings indicate this is a known malicious redirector, and the document body reinforces the lure by mentioning 'free Robux hack' and providing a direct link. While no scripts were extracted, the primary attack vector appears to be social engineering via a deceptive link within the document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/431946152/free-robux-hack-no-human-verification-game-hack In PDF document text
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/roblox-hack-downloads-free_GM431946152.pdfIn PDF document text
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/roblox-hack-build-your-own-boat_GM431946152.pdfIn PDF document text
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-mobile-ios_GM431946152.pdfIn PDF document text
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/promocodes-roblox-free-robux_GM431946152.pdfIn PDF document text
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/how-to-make-a-group-for-free-on-roblox_GM431946152.pdfIn PDF document text
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/how-to-get-things-for-free-in-roblox_GM431946152.pdfIn PDF document text
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/minecraft-classic-free_GM479516143.pdfIn PDF document text
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/password-generator-roblox-hack_GM431946152.pdfIn PDF document text
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/how-to-make-your-roblox-shirt-free_GM431946152.pdfIn PDF document text
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/free-roblox-estudios_GM431946152.pdfIn PDF document text
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/roblox-bubble-gum-rainbow-shock-free_GM431946152.pdfIn PDF document text
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-on-roblox-without-hacks-2021_GM431946152.pdfIn PDF document text
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/free-tiktok-fans-and-likes_GM835599320.pdfIn PDF document text
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/how-to-get-roblox-20-body-for-free_GM431946152.pdfIn PDF document text
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/roblox-to-get-robux-hack_GM431946152.pdfIn PDF document text
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-hack-pastebin_GM431946152.pdfIn PDF document text
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/how-to-hack-into-an-account-on-roblox_GM431946152.pdfIn PDF document text
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/free-draw-on-roblox_GM431946152.pdfIn PDF document text
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/lin-for-free-robux_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
font_00_sfnt_off00003434.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3434 22352 bytes
SHA-256: 44b59b925e7133f2b2111ef581a66fbe7bacede2b8dd9db4f827fc87e3aa6f0f
font_01_sfnt_off000065da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65DA 19504 bytes
SHA-256: eb8ce7e3da5a97c3b4f0a1013d81a421e960dbc6320d0a210e145d8bed029be0

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