Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ae0d647c0b5a277…

MALICIOUS

PDF

35.8 KB Created: 2021-07-04 01:59:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: f74c5135eccdd31a57c46afbd20bf053 SHA-1: a303bbc8326fd7df61d8dcef17983afdf6b13934 SHA-256: 8ae0d647c0b5a277729eeda878e3cdab34d6c5ccb8b339fd9e0116411ea99c4e
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/free-robux-2021-game-hack PDF link annotation
    • http://www.kraftyzone.com/uploaded_files/userfiles/files/roblox-royalty-free-music_GM431946152.pdfIn PDF document text
    • http://www.kraftyzone.com/uploaded_files/userfiles/files/change-your-roblox-name-for-free-reddit_GM431946152.pdfIn PDF document text
    • http://www.kraftyzone.com/uploaded_files/userfiles/files/free-robux-codes-generator_GM431946152.pdfIn PDF document text
    • http://www.kraftyzone.com/uploaded_files/userfiles/files/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://www.kraftyzone.com/uploaded_files/userfiles/files/free-coin-and-spin-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.kraftyzone.com/uploaded_files/userfiles/files/coin-master-hack-apk-free-download_GM406889139.pdfIn PDF document text
    • http://www.kraftyzone.com/uploaded_files/userfiles/files/how-to-get-free-robux-seniac_GM431946152.pdfIn PDF document text
    • http://www.kraftyzone.com/uploaded_files/userfiles/files/free-robux-youtube_GM431946152.pdfIn PDF document text
    • http://www.kraftyzone.com/uploaded_files/userfiles/files/spin-link_GM406889139.pdfIn PDF document text
    • http://www.kraftyzone.com/uploaded_files/userfiles/files/hire-someone-to-hack-a-roblox-account_GM431946152.pdfIn PDF document text
    • http://www.kraftyzone.com/uploaded_files/userfiles/files/free-robux-for-nintendo-switch_GM431946152.pdfIn PDF document text
    • http://www.kraftyzone.com/uploaded_files/userfiles/files/roblox-army-free-robux_GM431946152.pdfIn PDF document text
    • http://www.kraftyzone.com/uploaded_files/userfiles/files/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://www.kraftyzone.com/uploaded_files/userfiles/files/roblox-shinobi-life-hack-2021_GM431946152.pdfIn PDF document text
    • http://www.kraftyzone.com/uploaded_files/userfiles/files/roblox-sit-fly-hack_GM431946152.pdfIn PDF document text
    • http://www.kraftyzone.com/uploaded_files/userfiles/files/free-robux-no-human-verification-generator_GM431946152.pdfIn PDF document text
    • http://www.kraftyzone.com/uploaded_files/userfiles/files/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.kraftyzone.com/uploaded_files/userfiles/files/coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://www.kraftyzone.com/uploaded_files/userfiles/files/get-roblox-items-free-working-2021_GM431946152.pdfIn PDF document text
    • http://www.kraftyzone.com/uploaded_files/userfiles/files/free-model-death-star-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_off0000342b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x342B 22636 bytes
SHA-256: 5abc49aa4a7621bdb213453b88477b84cc10860eb7abc071117c1430e12e2ef2
font_01_sfnt_off00006692.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6692 19116 bytes
SHA-256: bd102244ffb40c6add567cd3640126a26b927334c4b0bdc73f6a542841550b4a

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