Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a667c22d9396e20…

MALICIOUS

PDF

42.3 KB Created: 2021-05-15 06:36:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: ef98df362306a406b6ee3d660b580f25 SHA-1: 87306589cbdd1029045a25638b6f550af493a7bd SHA-256: 0a667c22d9396e203ae4fdd6cd09270e06552b9d84b2cf64ee46c96f05b73c7e
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-severity heuristic firing indicating it links to a "free generator / game hack" redirector. The embedded URL, https://netcdn.xyz/app/431946152/free-roblox-gift-card-game-hack, is the primary indicator of this malicious lure. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a phishing or scam attempt designed to redirect users to potentially malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • 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.
  • 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 https://netcdn.xyz/app/431946152/free-roblox-gift-card-game-hack PDF link annotation
    • http://schmittmusik.de/images/free-roblox-shirt-templates-2021_GM431946152.pdfIn PDF document text
    • http://schmittmusik.de/images/roblox-hacks-com_GM431946152.pdfIn PDF document text
    • http://schmittmusik.de/images/roblox-its-free_GM431946152.pdfIn PDF document text
    • http://schmittmusik.de/images/coin-master-gold-cards-free_GM406889139.pdfIn PDF document text
    • http://schmittmusik.de/images/coin-master-download-hack-ios_GM406889139.pdfIn PDF document text
    • http://schmittmusik.de/images/coin-master-free-coins-2021_GM406889139.pdfIn PDF document text
    • http://schmittmusik.de/images/minecraft-free-unblocked_GM479516143.pdfIn PDF document text
    • http://schmittmusik.de/images/how-to-download-minecraft-for-free-on-your-phone_GM479516143.pdfIn PDF document text
    • http://schmittmusik.de/images/how-to-get-minecraft-windows-10-for-free-with-java_GM479516143.pdfIn PDF document text
    • http://schmittmusik.de/images/jailbreak-roblox-hack_GM431946152.pdfIn PDF document text
    • http://schmittmusik.de/images/robloxheroxyz-free-robux_GM431946152.pdfIn PDF document text
    • http://schmittmusik.de/images/coin-master-hack-android-2021_GM406889139.pdfIn PDF document text
    • http://schmittmusik.de/images/coin-master-hack-tool-v1-9_GM406889139.pdfIn PDF document text
    • http://schmittmusik.de/images/how-to-legally-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://schmittmusik.de/images/coin-master-hack-spins-free_GM406889139.pdfIn PDF document text
    • http://schmittmusik.de/images/free-spin-coin-master-hacktoman_GM406889139.pdfIn PDF document text
    • http://schmittmusik.de/images/games-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://schmittmusik.de/images/are-robux-generators-safe_GM431946152.pdfIn PDF document text
    • http://schmittmusik.de/images/free-spins-for-coin-master-that-work_GM406889139.pdfIn PDF document text
    • http://schmittmusik.de/images/free-coin-master-gold-cards_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_003_off000049e5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49E5 24508 bytes
SHA-256: c7b49987900e5ef28d4f238908e2ca86677f8dee88075f6ec3ba15d11f338934
font_01_sfnt_off00008203.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8203 18572 bytes
SHA-256: d6dd878634c6e0bfa0573f8d07d8c04072d5223543faa3ff40eccc306bc8b9ad

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