Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b4291e769b1d72f…

MALICIOUS

PDF

34.0 KB Created: 2021-07-01 14:08:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: adb4fdc7f86876b9be94d78f81f182fb SHA-1: aab64af98e088fe901e307cc40a8bbacd860c37d SHA-256: 7b4291e769b1d72f23e56dcf61587abbb2395fa30b8562bdeb2d40690bf139f7
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

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.co/app/431946152/roblox-free-hat-codes-game-hack PDF link annotation
    • https://learnwmf.org/image/data/files/coin-master-unlimited-spins-hack_GM406889139.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/free-lambo-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/rewards-roblox_GM431946152.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/tiktok-free-fans-cheat_GM835599320.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/roblox-free-robux-offers_GM431946152.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/roblox-free-robux-place_GM431946152.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/gamekitcom-free-robux_GM431946152.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/free-spin-and-win-coin-master_GM406889139.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/how-to-load-your-hacks-roblox_GM431946152.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/robux-generator-no-survey_GM431946152.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/coin-master-mod-apk_GM406889139.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/free-robux-videos_GM431946152.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/minecraft-realms-free-trial_GM479516143.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/roblox-free-draw-bot_GM431946152.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/download-apps-for-robux_GM431946152.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/free-robux-kid-friendly-no-human-verification_GM431946152.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/roblox-hack-game_GM431946152.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/coinmaster-spins_GM406889139.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/how-to-download-minecraft-for-free-on-mac_GM479516143.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/free-sample-roblox-download_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_off00002db8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DB8 22592 bytes
SHA-256: c7a9d4061f220111fa134c82c8ab0a841f300886899bee15641a52fad85568f2
font_01_sfnt_off00005ffa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FFA 18928 bytes
SHA-256: 2c0b98ea403bd7eaae0b062699d60d6fbe1734c93d50b8c1a12a87a9c0d2d1cc

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