Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ef4468aa95ca49b…

MALICIOUS

PDF

44.8 KB Created: 2021-06-14 01:32:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: c896572fc13c0cd44f2488840d512269 SHA-1: f48b5d0d1c157074da550bd68c61ddcaf3cdca5d SHA-256: 7ef4468aa95ca49bcef3b6b87939c305cccbdba371aadaaaf539c7e722517002
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 0.9632

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/how-to-get-free-robux-2021-game-hack PDF link annotation
    • https://liceucastrodelapenya.com/images/free-spin-today-coin-master_GM406889139.pdfIn PDF document text
    • https://liceucastrodelapenya.com/images/wallythemad-s-cheat-for-roblox_GM431946152.pdfIn PDF document text
    • https://liceucastrodelapenya.com/images/how-to-get-free-coins-on-flip-master_GM406889139.pdfIn PDF document text
    • https://liceucastrodelapenya.com/images/coin-master-admin-free-spins_GM406889139.pdfIn PDF document text
    • https://liceucastrodelapenya.com/images/coin-master-free-spin-download_GM406889139.pdfIn PDF document text
    • https://liceucastrodelapenya.com/images/how-to-get-free-robux-inspect_GM431946152.pdfIn PDF document text
    • https://liceucastrodelapenya.com/images/free-robux-rewards_GM431946152.pdfIn PDF document text
    • https://liceucastrodelapenya.com/images/coin-master-free-coins-cheat_GM406889139.pdfIn PDF document text
    • https://liceucastrodelapenya.com/images/free-tiktok-likes-app_GM835599320.pdfIn PDF document text
    • https://liceucastrodelapenya.com/images/free-robux-websites-no-human-verification_GM431946152.pdfIn PDF document text
    • https://liceucastrodelapenya.com/images/games-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://liceucastrodelapenya.com/images/get-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://liceucastrodelapenya.com/images/como-tener-robux-gratis-hack_GM431946152.pdfIn PDF document text
    • https://liceucastrodelapenya.com/images/how-to-hack-minecraft_GM479516143.pdfIn PDF document text
    • https://liceucastrodelapenya.com/images/how-to-get-free-robux-website_GM431946152.pdfIn PDF document text
    • https://liceucastrodelapenya.com/images/how-to-hack-fly-in-roblox-pet-ranch-simulater_GM431946152.pdfIn PDF document text
    • https://liceucastrodelapenya.com/images/free-robux-picture_GM431946152.pdfIn PDF document text
    • https://liceucastrodelapenya.com/images/coin-master-hacks_GM406889139.pdfIn PDF document text
    • https://liceucastrodelapenya.com/images/how-to-get-free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • https://liceucastrodelapenya.com/images/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000048c8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48C8 24456 bytes
SHA-256: c97c72ee733e953132628678b379d4b7fd4d0204fa4b52ceabcd2e35120881ef
font_01_sfnt_off00008110.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8110 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off00008afa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AFA 18684 bytes
SHA-256: 662354714a7c4aa127b8bd681013e9d5d113fbfc5a2f5afb2d34764175bb04a5

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