Malicious PDF — malware analysis report

Static analysis result for SHA-256 ef0cc43c198b8267…

MALICIOUS

PDF

34.5 KB Created: 2021-07-05 07:41:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 03496e9a6965bf8c5ce5c23e004c8ad8 SHA-1: 69417cf462894fefafd74e7cb4727d418f24f61d SHA-256: ef0cc43c198b82678e88cca1afeea0b536b8a5f20ce89df3a815b06e09a13fc8
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that are presented as links to game hacks and free items for popular games. The primary URL, http://netcdn.tw/app/431946152/roblox-free-items-glitch-2021-game-hack, is flagged as a redirector lure. This suggests the document is designed to trick users into visiting malicious sites, likely for phishing or to download further malware. No scripts were extracted, but the overall pattern is consistent with a phishing or scam campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/431946152/roblox-free-items-glitch-2021-game-hack PDF link annotation
    • https://i-photo7.com/image/data/files/minecraft-free-school_GM479516143.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/coin-master-daily-gifts_GM406889139.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/coin-master-heaven-free-daily-spins_GM406889139.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/how-to-get-free-cars-in-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/hack-minecraft_GM479516143.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/how-to-cheat-in-roblox-obby_GM431946152.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/how-to-get-minecraft-bedrock-for-free-with-java_GM479516143.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/coin-master-free-gold-cards-link_GM406889139.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/roblox-vehicle-simulator-free-money_GM431946152.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/free-robux-please_GM431946152.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/can-you-get-free-pokeballs-in-pokemon-go_GM1094591345.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/how-to-find-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/free-robux-discord-servers_GM431946152.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/minecraft-windows-free_GM479516143.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/free-robux-codes-generator-no-verification_GM431946152.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/minecraft-pe-free-download_GM479516143.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/hacks-para-tener-dinero-en-arsenal-roblox_GM431946152.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/gamehunters-coin-master_GM406889139.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/coin-master-hack-app-2021_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
font_00_sfnt_off00002ebe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EBE 22400 bytes
SHA-256: 203a516eae2c2e55f53d02e2b8b49ee6a72b67e36f454b2cbdc9c35458d912fe
font_01_sfnt_off00006098.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6098 19516 bytes
SHA-256: 60da91b536ae12ad3ce6791ffaf7af97f1d95d51bd0ab42dacab998e7cc21686

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