Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7f9356dc066b31a…

MALICIOUS

PDF

34.4 KB Created: 2021-06-19 13:27:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 6171ce29763be2115d49118c295d9663 SHA-1: dcf7d2c9db6c5894059f7d71a9db3e8366890338 SHA-256: f7f9356dc066b31a13230527fde45e4a0aea1747db8e8b77f58451e62f36179e
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-games-free-items-game-hack PDF link annotation
    • http://aeridefense.com/image/data/files/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/how-to-install-a-hacked-client-roblox-mac_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/coin-master-free-spin-today_GM406889139.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/coin-master-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/hey-google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/roblox-apocalypse-rising-hack_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/minecraft-book-collection_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/coin-master-free-500-spins-link_GM406889139.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/hacking-roblox-website_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/free-spins-and-coins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/free-robux-mobile-no-verification_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/free-robux-without-offers_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/7-year-old-roblox_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/free-tiktok-likes-and-followers_GM835599320.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/how-to-get-free-robux-gift-cards_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/robux-free-gift-card_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/best-free-robux-sites_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/free-cheat-codes-for-coin-master_GM406889139.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/coin-master-hack-apk-android_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_off00003031.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3031 22204 bytes
SHA-256: 556a7037b435ac2b565ddac486843a659cd759db1feccf9d33a1ef0b8ca1ba4d
font_01_sfnt_off000061a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61A4 19016 bytes
SHA-256: a9577351504244be12818cf9d991ced7f0575e857a63584cba0b41418aaeaab8

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