Malicious PDF — malware analysis report

Static analysis result for SHA-256 a69052a25d03b1b9…

MALICIOUS

PDF

35.2 KB Created: 2021-06-25 22:05:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 45291c1d081121375cc8d606b5166f54 SHA-1: b7c792849d31a5c54b70944defba3738cd9644cd SHA-256: a69052a25d03b1b99d3ca0d6228debd0cb01e6f2dfd3c50c35a91427848ab21d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to a known malicious redirector infrastructure, masquerading as 'game hacks' and 'free currency' generators. The primary lure URL is http://netcdn.co/app/431946152/how-to-hack-roblox-accounts-august-2021-game-hack, which is part of a chain of redirects. The document body and embedded URLs strongly suggest a phishing or scam campaign aimed at users seeking cheats or in-game advantages.

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-hack-roblox-accounts-august-2021-game-hack In PDF document text
    • https://perpustakaan.itda.ac.id/repository/free-roblox-exploits-for-mac_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/roblox-robux-and-tix-hack-game_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/how-to-get-free-robux-in-60-seconds_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/coin-master-daily-bonus_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/how-to-get-free-bc-on-roblox-mobile_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/roblox-hack-on-computer_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/how-to-hack-mcpe-master-coins_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/roblox-hacking-website_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/free-coin-and-spin-for-coin-master_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/how-to-get-free-robux-app_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/free-coin-master-hacks_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/how-to-get-minecraft-for-free-on-computer_GM479516143.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/apps-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/blox-world-free-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/how-to-get-free-roblox-premium_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/aimbot-hack-roblox-comnand-promt_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/free-rich-roblox-accounts_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/robux-com-free-account_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/roblox-cheat-engine-hacks-2021_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_off0000306d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x306D 22628 bytes
SHA-256: b8984129da8e0846a75333ad1bd5e7e36415aa5bf9477ddc8f66e421e6979d65
font_01_sfnt_off0000631e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x631E 19468 bytes
SHA-256: b693ebb93386d3f093032544b7a3f678141e76758a32e74daf60188defe023ac

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