Malicious PDF — malware analysis report

Static analysis result for SHA-256 8cdd4366849a1939…

MALICIOUS

PDF

45.5 KB Created: 2021-06-03 15:52:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 43dcb65f5c170ddce4f1a888d85efb07 SHA-1: 115d5acb8483112aa3524559ea0065b2f1b8579c SHA-256: 8cdd4366849a1939d35ccb44d17cc35d7d6378d0ca2d543d1947079326dbef08
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 0.9864

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.online/app/406889139/2021-coin-master-hack-game-hack PDF link annotation
    • https://learning.man3blitar.my.id/__statics/gudangsoal/files/roblox-group-free-robux_GM431946152.pdfIn PDF document text
    • https://learning.man3blitar.my.id/__statics/gudangsoal/files/coin-master-ad_GM406889139.pdfIn PDF document text
    • https://learning.man3blitar.my.id/__statics/gudangsoal/files/coin-master-vip-hack_GM406889139.pdfIn PDF document text
    • https://learning.man3blitar.my.id/__statics/gudangsoal/files/roblox-hack-ga_GM431946152.pdfIn PDF document text
    • https://learning.man3blitar.my.id/__statics/gudangsoal/files/how-do-you-hack-for-2021000-coins-on-flip-master_GM406889139.pdfIn PDF document text
    • https://learning.man3blitar.my.id/__statics/gudangsoal/files/how-to-hack-coin-master-pc_GM406889139.pdfIn PDF document text
    • https://learning.man3blitar.my.id/__statics/gudangsoal/files/coin-master-free-spins-link-download-hack_GM406889139.pdfIn PDF document text
    • https://learning.man3blitar.my.id/__statics/gudangsoal/files/funbloxxyz-free-robux_GM431946152.pdfIn PDF document text
    • https://learning.man3blitar.my.id/__statics/gudangsoal/files/wurst-112_GM479516143.pdfIn PDF document text
    • https://learning.man3blitar.my.id/__statics/gudangsoal/files/free-unlimited-robux_GM431946152.pdfIn PDF document text
    • https://learning.man3blitar.my.id/__statics/gudangsoal/files/rare-free-links-to-coin-master_GM406889139.pdfIn PDF document text
    • https://learning.man3blitar.my.id/__statics/gudangsoal/files/robloxhacks_GM431946152.pdfIn PDF document text
    • https://learning.man3blitar.my.id/__statics/gudangsoal/files/roblox-robux-page_GM431946152.pdfIn PDF document text
    • https://learning.man3blitar.my.id/__statics/gudangsoal/files/roblox-hack-download_GM431946152.pdfIn PDF document text
    • https://learning.man3blitar.my.id/__statics/gudangsoal/files/free-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://learning.man3blitar.my.id/__statics/gudangsoal/files/coin-master-free-spins-hack-ios_GM406889139.pdfIn PDF document text
    • https://learning.man3blitar.my.id/__statics/gudangsoal/files/free-robux-no-generator_GM431946152.pdfIn PDF document text
    • https://learning.man3blitar.my.id/__statics/gudangsoal/files/free-minecraft-account-and-password-generator_GM479516143.pdfIn PDF document text
    • https://learning.man3blitar.my.id/__statics/gudangsoal/files/pokemon-go-free-download_GM1094591345.pdfIn PDF document text
    • https://learning.man3blitar.my.id/__statics/gudangsoal/files/robux-apk_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
stream_004_off00004ea7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4EA7 29080 bytes
SHA-256: 3a020c7501f3032c02d49d8abc6b858348c10560da8ae1590f19311098b17ca4
font_01_sfnt_off00008fa8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FA8 18116 bytes
SHA-256: 920b3105a00d2e81b44cb3def78d47879883f677e8f7cd602ed441085c36723f

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