Malicious PDF — malware analysis report

Static analysis result for SHA-256 2025d048eb40c6ca…

MALICIOUS

PDF

35.6 KB Created: 2021-07-06 04:29:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: dd602855f1225981ef3fead00314407e SHA-1: d104a7bed976259d263a712e5d1140be25a7ffff SHA-256: 2025d048eb40c6ca2ee2b05cb45386d752e85a76ebee5c4da43c600592b73d18
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/406889139/coin-master-cards-free-game-hack PDF link annotation
    • https://setda.denpasarkota.go.id/new/public/ckfinder/userfiles/files/robux-free-2021_GM431946152.pdfIn PDF document text
    • https://setda.denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-robux-generator-online-no-survey-no-download_GM431946152.pdfIn PDF document text
    • https://setda.denpasarkota.go.id/new/public/ckfinder/userfiles/files/is-minecraft-dungeons-free_GM479516143.pdfIn PDF document text
    • https://setda.denpasarkota.go.id/new/public/ckfinder/userfiles/files/minecraft-free_GM479516143.pdfIn PDF document text
    • https://setda.denpasarkota.go.id/new/public/ckfinder/userfiles/files/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://setda.denpasarkota.go.id/new/public/ckfinder/userfiles/files/best-roblox-jailbreak-hack-2021-mod-menu-level-5_GM431946152.pdfIn PDF document text
    • https://setda.denpasarkota.go.id/new/public/ckfinder/userfiles/files/robux-claimer_GM431946152.pdfIn PDF document text
    • https://setda.denpasarkota.go.id/new/public/ckfinder/userfiles/files/coin-master-hack-no-verify_GM406889139.pdfIn PDF document text
    • https://setda.denpasarkota.go.id/new/public/ckfinder/userfiles/files/pokemon-go-free-nickname_GM1094591345.pdfIn PDF document text
    • https://setda.denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-coin-master-spin-app_GM406889139.pdfIn PDF document text
    • https://setda.denpasarkota.go.id/new/public/ckfinder/userfiles/files/how-do-you-get-free-robux-on-roblox-pc_GM431946152.pdfIn PDF document text
    • https://setda.denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-roblox-dnl-injector_GM431946152.pdfIn PDF document text
    • https://setda.denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-robux-hack-no-survey-no-verification_GM431946152.pdfIn PDF document text
    • https://setda.denpasarkota.go.id/new/public/ckfinder/userfiles/files/how-to-get-minecraft-windows-10-for-free-with-java_GM479516143.pdfIn PDF document text
    • https://setda.denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-robux-just-click_GM431946152.pdfIn PDF document text
    • https://setda.denpasarkota.go.id/new/public/ckfinder/userfiles/files/coin-master-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • https://setda.denpasarkota.go.id/new/public/ckfinder/userfiles/files/coin-master-free-spins-android_GM406889139.pdfIn PDF document text
    • https://setda.denpasarkota.go.id/new/public/ckfinder/userfiles/files/roblox-avatar-editor-free_GM431946152.pdfIn PDF document text
    • https://setda.denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-robux-real-2021_GM431946152.pdfIn PDF document text
    • https://setda.denpasarkota.go.id/new/public/ckfinder/userfiles/files/how-to-get-free-robux-without-downloading-any-apps_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_002_off00003342.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3342 23736 bytes
SHA-256: 8459632721202ef14cbddafcb750e72af9a6b0ce5beaf1f55584c92c1775a3ff
font_01_sfnt_off0000690f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x690F 18172 bytes
SHA-256: 51a6fa1d0322029b9e2ca075150f5a08b3c54d54cadd2367ada3da490e26397a

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