Malicious PDF — malware analysis report

Static analysis result for SHA-256 880da0ada7a05ac6…

MALICIOUS

PDF

34.1 KB Created: 2021-06-28 21:38:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b577728f9969fb2530c7bdd7f693fd34 SHA-1: 7ac476ccfc513fbafc68200debda7d461a6d4dca SHA-256: 880da0ada7a05ac628a4f11b7931e96464f0b615aaeca5b00923cac71ac1f817
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded URLs and a visual download button lure, strongly suggesting a social engineering attempt. The ML classifier also flagged this PDF as malicious with high confidence. The primary URL, http://netcdn.co/app/431946152/roblox-ff-hack-game-hack, is likely the destination for a malicious payload or unwanted software download. No scripts were extracted from this sample.

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/roblox-ff-hack-game-hack In PDF document text
    • https://lib.unitri.ac.id/repository/minecraft-gun-games-free_GM479516143.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/rbx-hut-promo-codes_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/coin-master-spins_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/unsopported-smoke-flight-roblox-free-copy_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/fighting-free-card-coin-master_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/coin-master-hack-tool-ios_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/free-robux-for-free_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/top-ten-roblox-hacks_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/cheat-engine-65-roblox_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/coin-master-hack-without-root_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/hacks-for-roblox-2021-admin-hacks-dowload_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/how-to-get-roebucks_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/free-robux-without-survey_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/free-robux-reddit_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/roblox-robux-hack-no-survey-mac_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/can-you-really-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/how-to-make-robux_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/minecraft-hacks-18-9_GM479516143.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/natual-survivle-roblox-cheats_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/como-ser-hacker-en-roblox-en-todos-los-juegos_GM431946152.pdfIn PDF document text
    • https://www.roblox.com/my/tasksIn 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_off00002eca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2ECA 22484 bytes
SHA-256: bc0dc4f59974e5c4305e649d724f3c56a0a0594b6ae75e74d055339af8f44574
font_01_sfnt_off000060f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60F6 18820 bytes
SHA-256: df5ddb511a65c3a2c1db1527e0dcc692ff36cc817830f18e503b76ffa8fcce12

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