Malicious PDF — malware analysis report

Static analysis result for SHA-256 4dbb10dfc2e04a95…

MALICIOUS

PDF

36.1 KB Created: 2021-07-05 16:41:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: de0cbb1b0b12282bb711161f925c4f76 SHA-1: 8ff93443042e2dcf7b383802059025d383efe969 SHA-256: 4dbb10dfc2e04a95a4e7e5c21abb27ecb7520857ef89006e49648b85fb0676b7
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/what-is-exploiting-in-roblox-game-hack PDF link annotation
    • https://elearning.mialirsyadkotakediri.com/__statics/gudangsoal/files/discord-servers-that-give-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mialirsyadkotakediri.com/__statics/gudangsoal/files/roblox-sword-hack-reacher_GM431946152.pdfIn PDF document text
    • https://elearning.mialirsyadkotakediri.com/__statics/gudangsoal/files/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mialirsyadkotakediri.com/__statics/gudangsoal/files/free-roblox-card-codes_GM431946152.pdfIn PDF document text
    • https://elearning.mialirsyadkotakediri.com/__statics/gudangsoal/files/flowify-hacks-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mialirsyadkotakediri.com/__statics/gudangsoal/files/robux-converter_GM431946152.pdfIn PDF document text
    • https://elearning.mialirsyadkotakediri.com/__statics/gudangsoal/files/coinmaster-rewards_GM406889139.pdfIn PDF document text
    • https://elearning.mialirsyadkotakediri.com/__statics/gudangsoal/files/roblox-2021-hack_GM431946152.pdfIn PDF document text
    • https://elearning.mialirsyadkotakediri.com/__statics/gudangsoal/files/free-spins-and-coins-coin-master-app_GM406889139.pdfIn PDF document text
    • https://elearning.mialirsyadkotakediri.com/__statics/gudangsoal/files/get-more-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mialirsyadkotakediri.com/__statics/gudangsoal/files/coin-master-hack-8-ball-pool_GM406889139.pdfIn PDF document text
    • https://elearning.mialirsyadkotakediri.com/__statics/gudangsoal/files/robux-hack-pastebin-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mialirsyadkotakediri.com/__statics/gudangsoal/files/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • https://elearning.mialirsyadkotakediri.com/__statics/gudangsoal/files/robux-free-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mialirsyadkotakediri.com/__statics/gudangsoal/files/coin-master-hack-tool_GM406889139.pdfIn PDF document text
    • https://elearning.mialirsyadkotakediri.com/__statics/gudangsoal/files/how-to-get-free-robux-inspect-no-waiting-saves_GM431946152.pdfIn PDF document text
    • https://elearning.mialirsyadkotakediri.com/__statics/gudangsoal/files/how-to-get-free-robux-on-phone_GM431946152.pdfIn PDF document text
    • https://elearning.mialirsyadkotakediri.com/__statics/gudangsoal/files/claim-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mialirsyadkotakediri.com/__statics/gudangsoal/files/how-to-get-free-robux-without-offers_GM431946152.pdfIn PDF document text
    • https://elearning.mialirsyadkotakediri.com/__statics/gudangsoal/files/coin-master-free-coins-link-2021-today_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_off000035f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x35F0 22244 bytes
SHA-256: a56c9a9a5eabab9e46ae3a2cd3cd9da4b244fbf238ef7de759175091707e2e55
font_01_sfnt_off0000675a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x675A 19252 bytes
SHA-256: b9aaf40e856bc4790aa6223958b3de1e6419839b280bcc854c61a7009315492b

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