Malicious PDF — malware analysis report

Static analysis result for SHA-256 d07347a13442b7f5…

MALICIOUS

PDF

35.0 KB Created: 2021-06-18 01:26:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 2a90cb4c7e408de456481df61fca0673 SHA-1: d2d3b3616228644482a782c839bfe5c5d62d63e0 SHA-256: d07347a13442b7f52ad0c70728cd64b3cc56098a4a2c6c97f18ff760eca2d50a
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/robux-free-roblox-2021-game-hack PDF link annotation
    • http://elib.upiyptk.ac.id/opac/repository/spins-gratis-coin-master-hoy_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/coin-master-daily-free-spins-link-today-facebook_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/spin-coin_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/how-to-hack-roblox-account-february_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/free-minecraft-com_GM479516143.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/coin-master-34-4-hack-download_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/coin-master-free-spins-link-no-verification-2021_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/pastebin-hack-de-roblox_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/coin-master-free-spin-daily-link_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/free-robux-no-gift-card_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/download-hack-coin-master-apk_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/free-robux-real-2021_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/free-roblox-followers_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/free-outfits-roblox_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/coin-master-raid-hack_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/daily-spin-coin-master-free_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/is-minecraft-free-on-xbox-one_GM479516143.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/roblox-free-robux-website_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/roblox-apk-hack_GM431946152.pdfIn PDF document text
    • https://www.roblox.com/.IIn 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_off0000312f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x312F 22456 bytes
SHA-256: f717ba3b6b4f9c62bebae19c27f5ef5977e3c05cd2e51faefb6ee527c4633fcd
font_01_sfnt_off00006328.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6328 19192 bytes
SHA-256: 5ca347e502870a92c4c7c80822195e45aa6edd4ce7f6d5cf128d241a39ab6970

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