Malicious PDF — malware analysis report

Static analysis result for SHA-256 b053ecd4cfc580f6…

MALICIOUS

PDF

34.1 KB Created: 2021-07-03 20:13:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: bd57e16b270035dc6d3074da7110366b SHA-1: b5d99a7b7fb81b78a2f397c89f1f77b4d9bc4a39 SHA-256: b053ecd4cfc580f6fef153ff4fb7083cdde5595e7c7d3e58caa337919c0016c2
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.tw/app/431946152/original-roblox-game-hack PDF link annotation
    • https://selesindihome.com/ckfinder/userfiles/files/roblox-hack-v2-11-download_GM431946152.pdfIn PDF document text
    • https://selesindihome.com/ckfinder/userfiles/files/como-hackear-cualquier-juego-en-roblox_GM431946152.pdfIn PDF document text
    • https://selesindihome.com/ckfinder/userfiles/files/free-robux-no-human-verification-no-survey_GM431946152.pdfIn PDF document text
    • https://selesindihome.com/ckfinder/userfiles/files/hack-para-roblox-kick-off_GM431946152.pdfIn PDF document text
    • https://selesindihome.com/ckfinder/userfiles/files/coin-master-hoe-to-get-extra-free-spins_GM406889139.pdfIn PDF document text
    • https://selesindihome.com/ckfinder/userfiles/files/free-robux-that-has-no-human-verification_GM431946152.pdfIn PDF document text
    • https://selesindihome.com/ckfinder/userfiles/files/roblox-hack-without-downloading-games_GM431946152.pdfIn PDF document text
    • https://selesindihome.com/ckfinder/userfiles/files/roblox-hacker-march-18th-2021_GM431946152.pdfIn PDF document text
    • https://selesindihome.com/ckfinder/userfiles/files/how-to-hack-to-get-robux_GM431946152.pdfIn PDF document text
    • https://selesindihome.com/ckfinder/userfiles/files/minecraft-apk-114_GM479516143.pdfIn PDF document text
    • https://selesindihome.com/ckfinder/userfiles/files/long-pastel-hair-roblox-free-to-purchase_GM431946152.pdfIn PDF document text
    • https://selesindihome.com/ckfinder/userfiles/files/coin-master-daily-free-spin-and-coin_GM406889139.pdfIn PDF document text
    • https://selesindihome.com/ckfinder/userfiles/files/how-to-get-minecraft-on-chromebook-for-free_GM479516143.pdfIn PDF document text
    • https://selesindihome.com/ckfinder/userfiles/files/buy-robux-free_GM431946152.pdfIn PDF document text
    • https://selesindihome.com/ckfinder/userfiles/files/get-robux-today_GM431946152.pdfIn PDF document text
    • https://selesindihome.com/ckfinder/userfiles/files/free-roblox-accounts-passwords-and-logins_GM431946152.pdfIn PDF document text
    • https://selesindihome.com/ckfinder/userfiles/files/tiktok-free-fans_GM835599320.pdfIn PDF document text
    • https://selesindihome.com/ckfinder/userfiles/files/how-to-hack-a-roblox-account-2021_GM431946152.pdfIn PDF document text
    • https://selesindihome.com/ckfinder/userfiles/files/free-twitter-codes-for-assasian-roblox_GM431946152.pdfIn PDF document text
    • https://selesindihome.com/ckfinder/userfiles/files/roblox-free-boy-hair-not-model_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_off00002f60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F60 22472 bytes
SHA-256: d4047a9a91cadeb34ee8eb297401f6c518d802187ab4ab1dab8cbf76930a2804
font_01_sfnt_off0000616b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x616B 18608 bytes
SHA-256: cda18107a8004d3fd9a2df0472be64e29a4b8b84a0aa3b03f94af7bd0ce31f53

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