Malicious PDF — malware analysis report

Static analysis result for SHA-256 2bb64e109567e666…

MALICIOUS

PDF

35.7 KB Created: 2021-07-09 02:45:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: e771516ab499ed37a65252e1b91dffed SHA-1: 23bc1ff945d857822d5d8287fcbb026ad5e8e898 SHA-256: 2bb64e109567e6668984bd15d6e917977eab04421cbb65eee72c2ddde2379a1e
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to game hacking, specifically for Minecraft and Roblox, to entice users. It contains multiple embedded URLs that redirect to sites offering "free generators" or "hacks." The primary malicious URL identified is http://netcdn.tw/app/479516143/how-to-hack-a-minecraft-server-and-make-yourself-op-game-hack, which likely serves as a landing page for a phishing or malware distribution scheme. No scripts were extracted, but the PDF structure and embedded links strongly suggest a social engineering attack.

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/479516143/how-to-hack-a-minecraft-server-and-make-yourself-op-game-hack PDF link annotation
    • https://pdiperjuanganbali.id/new/public/ckfinder/userfiles/files/coin-master-free-coins-twitter_GM406889139.pdfIn PDF document text
    • https://pdiperjuanganbali.id/new/public/ckfinder/userfiles/files/coin-master-free_GM406889139.pdfIn PDF document text
    • https://pdiperjuanganbali.id/new/public/ckfinder/userfiles/files/coin-master-hack-version-download-2021-android_GM406889139.pdfIn PDF document text
    • https://pdiperjuanganbali.id/new/public/ckfinder/userfiles/files/roblox-free-executor_GM431946152.pdfIn PDF document text
    • https://pdiperjuanganbali.id/new/public/ckfinder/userfiles/files/how-to-get-minecraft-for-free-on-xbox_GM479516143.pdfIn PDF document text
    • https://pdiperjuanganbali.id/new/public/ckfinder/userfiles/files/blackhawk-rescue-mission-roblox-hacks_GM431946152.pdfIn PDF document text
    • https://pdiperjuanganbali.id/new/public/ckfinder/userfiles/files/btool-hacks-roblox_GM431946152.pdfIn PDF document text
    • https://pdiperjuanganbali.id/new/public/ckfinder/userfiles/files/50-000-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://pdiperjuanganbali.id/new/public/ckfinder/userfiles/files/download-coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • https://pdiperjuanganbali.id/new/public/ckfinder/userfiles/files/coin-master-free-spins-link-download_GM406889139.pdfIn PDF document text
    • https://pdiperjuanganbali.id/new/public/ckfinder/userfiles/files/how-to-get-free-robux-easy_GM431946152.pdfIn PDF document text
    • https://pdiperjuanganbali.id/new/public/ckfinder/userfiles/files/free-robux-games-on-roblox-link_GM431946152.pdfIn PDF document text
    • https://pdiperjuanganbali.id/new/public/ckfinder/userfiles/files/robux-hack-script_GM431946152.pdfIn PDF document text
    • https://pdiperjuanganbali.id/new/public/ckfinder/userfiles/files/roblox-pokemon-brick-bronze-hacked_GM431946152.pdfIn PDF document text
    • https://pdiperjuanganbali.id/new/public/ckfinder/userfiles/files/free-robux-images_GM431946152.pdfIn PDF document text
    • https://pdiperjuanganbali.id/new/public/ckfinder/userfiles/files/games-on-roblox-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://pdiperjuanganbali.id/new/public/ckfinder/userfiles/files/how-to-get-minecraft-java-for-free_GM479516143.pdfIn PDF document text
    • https://pdiperjuanganbali.id/new/public/ckfinder/userfiles/files/free-roblox-pant-templates_GM431946152.pdfIn PDF document text
    • https://pdiperjuanganbali.id/new/public/ckfinder/userfiles/files/how-to-win-free-robux_GM431946152.pdfIn PDF document text
    • https://pdiperjuanganbali.id/new/public/ckfinder/userfiles/files/how-to-get-free-money-on-roblox-murder-mystery-2_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_off0000331d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x331D 23212 bytes
SHA-256: a2a8cb093dd048ccbc4258061da81a5b4060e389271be339d3537c8f4dc8b47b
font_01_sfnt_off00006651.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6651 19172 bytes
SHA-256: de5122dd7140aefbd5e4119096f7d50e8a9323c0cccb37eb35bf32659f598f97

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