Malicious PDF — malware analysis report

Static analysis result for SHA-256 deb5ef49123722ed…

MALICIOUS

PDF

34.4 KB Created: 2021-06-25 19:20:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 062c8f7d10c90441117a1ecc82190673 SHA-1: acc9e376a391c19a795599490171b54e284c2b1d SHA-256: deb5ef49123722edc5c6fc3662f48527b032756ff1cc7957f9363b1291ed36b2
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs, with a primary link identified as a malicious redirector. This link, 'http://netcdn.co/app/431946152/how-to-get-free-robux-with-builders-club-game-hack', is presented as a lure for game hacks, aiming to trick users into clicking. The presence of multiple similar links and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content.

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.co/app/431946152/how-to-get-free-robux-with-builders-club-game-hack In PDF document text
    • https://digilib.stieama.ac.id/repository/how-to-get-a-free-boombox-in-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/how-do-you-earn-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/roblox-free-gamepass-script-october-2021_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/how-do-you-get-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/minecraft-java-account-free_GM479516143.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-hack-spins_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-coins-coin-master_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/minecraft-clipart-free_GM479516143.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-robux-codes-2021-android_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-robux-exe_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/pepsi-hacks-roblox-script-cbro_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-hack-no-verification_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/earn-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/robux-page_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/games-that-give-free-robux_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-hack-uk_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/roblox-money-hack_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/roblox-robux-hack-no-download-2021_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-robux-please_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_off00002e57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E57 22160 bytes
SHA-256: c9a30cdfdf8a5d0089cde95d5124010291d5119bfbeda06915f5b1ad8b063aca
font_01_sfnt_off00005f41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F41 19716 bytes
SHA-256: b84c2c0d5759706d658c89252ca79e88c8e4c218dd7ff298b966e15a460e6fd4

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