Malicious PDF — malware analysis report

Static analysis result for SHA-256 dce863fd48416a69…

MALICIOUS

PDF

51.6 KB Created: 2021-06-09 07:07:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 4bfe0d30bc1b1760be7f5ccf84b74985 SHA-1: c352c2f4a2ff9f71b9a20953cd12e6046f8c19da SHA-256: dce863fd48416a691199913a8470256c8360c3de6a9e4307662f061da289e987
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 0.9464

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 https://netcdn.tw/app/431946152/hacks-para-roblox-jailbreak-2021-game-hack PDF link annotation
    • https://baligaoritour.com/new/public/ckfinder/userfiles/files/how-to-hack-coin-master-ios-jailbreak_GM406889139.pdfIn PDF document text
    • https://baligaoritour.com/new/public/ckfinder/userfiles/files/coin-master-free-spins-and-free-coins_GM406889139.pdfIn PDF document text
    • https://baligaoritour.com/new/public/ckfinder/userfiles/files/free-robux-earn_GM431946152.pdfIn PDF document text
    • https://baligaoritour.com/new/public/ckfinder/userfiles/files/how-to-get-minecraft-for-free-on-laptop_GM479516143.pdfIn PDF document text
    • https://baligaoritour.com/new/public/ckfinder/userfiles/files/roblox-hack-game_GM431946152.pdfIn PDF document text
    • https://baligaoritour.com/new/public/ckfinder/userfiles/files/como-hackear-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://baligaoritour.com/new/public/ckfinder/userfiles/files/roblox-bloxburg-free-money_GM431946152.pdfIn PDF document text
    • https://baligaoritour.com/new/public/ckfinder/userfiles/files/how-do-you-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://baligaoritour.com/new/public/ckfinder/userfiles/files/free-coin-and-spin-for-coin-master_GM406889139.pdfIn PDF document text
    • https://baligaoritour.com/new/public/ckfinder/userfiles/files/roblox-hacked-version-download_GM431946152.pdfIn PDF document text
    • https://baligaoritour.com/new/public/ckfinder/userfiles/files/can-you-give-me-free-robux_GM431946152.pdfIn PDF document text
    • https://baligaoritour.com/new/public/ckfinder/userfiles/files/coin-master-free-gold-cards-link-2021_GM406889139.pdfIn PDF document text
    • https://baligaoritour.com/new/public/ckfinder/userfiles/files/can-you-get-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • https://baligaoritour.com/new/public/ckfinder/userfiles/files/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • https://baligaoritour.com/new/public/ckfinder/userfiles/files/coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • https://baligaoritour.com/new/public/ckfinder/userfiles/files/coin-master-daily-free-spins-link_GM406889139.pdfIn PDF document text
    • https://baligaoritour.com/new/public/ckfinder/userfiles/files/how-do-we-get-free-robux_GM431946152.pdfIn PDF document text
    • https://baligaoritour.com/new/public/ckfinder/userfiles/files/coin-master-hack-355_GM406889139.pdfIn PDF document text
    • https://baligaoritour.com/new/public/ckfinder/userfiles/files/free-robux-no-verification-no-survey_GM431946152.pdfIn PDF document text
    • https://baligaoritour.com/new/public/ckfinder/userfiles/files/roblox-promo-code-to-get-free-robux_GM431946152.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_004_off0000571e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x571E 27892 bytes
SHA-256: 500390329c73dc178711701883dd633a1080107ff08651103ce9e233a9d8d53e
font_01_sfnt_off000097b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x97B3 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_02_sfnt_off0000a4c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA4C5 19024 bytes
SHA-256: e5076ff5aa675b82525578d1e1d192f1353bec501c320b696cbe25dea899f077

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