Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0883bd4097a057c…

MALICIOUS

PDF

35.1 KB Created: 2021-06-28 12:25:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: db2ce36d6b53a47b15e7521c3e913dc1 SHA-1: 65b3e94842702d2e599f33b3b7c48149c8f2d259 SHA-256: d0883bd4097a057c06ca1883555ee9ee84eadee3996da20bea6b065a878551f7
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a high-risk heuristic indicating it links to a 'free generator / game hack' redirector, specifically http://netcdn.co/app/431946152/how-dop-you-get-free-robux-game-hack. The document body and embedded URLs reinforce this theme, focusing on 'free Robux' and game hacks. The presence of a 'password-protected archive handoff' heuristic suggests that the linked content may be an encrypted payload, further indicating a malicious intent to deliver malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • PDF links to a 'free generator / game hack' redirector high 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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-dop-you-get-free-robux-game-hack PDF link annotation
    • http://library.itekes-bali.ac.id/repository/free-multiplayer-minecraft-server_GM479516143.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/roblox-com-hack_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-roblox-money-codes-2021_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/roblox-free-robox-dite_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/how-to-hack-someones-minecraft-account_GM479516143.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/how-to-get-bighead-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/coin-master-free-spins-and-coins-today-gift-reward_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/how-to-get-a-free-minecraft-server_GM479516143.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-minecraft-education-edition_GM479516143.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/how-to-get-free-robux-google_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/claim-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/robux-gratis-2021-hack_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-robux-no-download-no-password_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/cheat-codes-for-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/how-to-get-free-minecraft-alts_GM479516143.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/roblox-explorer-hack-2021_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/get-free-robux-robloxcom_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-coins-coin-master-link-today_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/follow-button-gives-free-robux_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/coin-master-daily-free-spins-link-today-blog_GM406889139.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
stream_002_off000030b5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x30B5 22596 bytes
SHA-256: ebf6c3b4a6c1294dafd56f28fad294f65b59dbd252084537a30de06cf823aaa6
font_01_sfnt_off000062f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62F3 19488 bytes
SHA-256: fa5eb64f95325b44a760abdfa74c43bcf4aaddecf8a98840d2bdf7f4bb3b999d

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