Malicious PDF — malware analysis report

Static analysis result for SHA-256 2cb6d948efa40381…

MALICIOUS

PDF

35.4 KB Created: 2021-06-24 19:36:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 3c52bc8d7c12cb2836b99bac10d1467e SHA-1: db236d3485332f2f0ce66214f389c50248a5c4d1 SHA-256: 2cb6d948efa40381d1617b2e233a893f51d672b83d707ec7fcf2892bbb42ea7d
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/free-robux-codes-no-verification-game-hack PDF link annotation
    • http://aeridefense.com/image/data/files/roblox-free-play_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/how-to-hack-a-roblox-account-2021_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/coin-master-free-coins-2021_GM406889139.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/free-robux-websites-that-actually-work_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/coin-master-free-spins-for-today_GM406889139.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/how-to-get-free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/minecraft-free-apk-java-edition_GM479516143.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/free-roblox-adopt-me-accounts_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/rblx-city-free-robux_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/minecraft-wurst-hacked-client_GM479516143.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/how-to-get-free-cards-for-coin-master_GM406889139.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/hack-coin-master-without-human-verification_GM406889139.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/how-to-log-out-of-coin-master_GM406889139.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/coin-master-unlimited-spin-link_GM406889139.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/how-to-hack-a-minecraft-server_GM479516143.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/coin-master-links-for-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/roblox-cool-free-tshirts_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/800-free-robux-ad_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/como-tener-hack-para-en-roblox_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/hack-executor-roblox_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_off000031e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31E8 22724 bytes
SHA-256: 07d5c9ee2b0fb4a2cba35e520a43ad3c4af81f262045ffe070e70fe1bbbde2ac
font_01_sfnt_off000064de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64DE 19248 bytes
SHA-256: 7c118f3686e549365112848f1cfe4604feffe3fb38e17c4b52e8f2bf9bb9aa8d

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