Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5ec0ac42cdf806e…

MALICIOUS

PDF

50.1 KB Created: 2021-05-17 08:15:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 0fcbd57879bd2bc92da72aafa81b5921 SHA-1: a4a92539561746097b4897529718ea06a221e9b6 SHA-256: a5ec0ac42cdf806e388eaff9d6f2e0cd28ff1fe4e653263c187bfefe7f43f29e
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 0.8594

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.xyz/app/406889139/coin-master-hack-spins-game-download-game-hack PDF link annotation
    • https://penanggulanganbencana.denpasarkota.go.id/new/public/ckfinder/userfiles/files/moonactive-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://penanggulanganbencana.denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-coin-master-coins_GM406889139.pdfIn PDF document text
    • https://penanggulanganbencana.denpasarkota.go.id/new/public/ckfinder/userfiles/files/coin-master-hack-program_GM406889139.pdfIn PDF document text
    • https://penanggulanganbencana.denpasarkota.go.id/new/public/ckfinder/userfiles/files/how-to-watch-ads-for-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://penanggulanganbencana.denpasarkota.go.id/new/public/ckfinder/userfiles/files/how-do-you-get-free-daily-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://penanggulanganbencana.denpasarkota.go.id/new/public/ckfinder/userfiles/files/coin-master-cracked-apk-free-download_GM406889139.pdfIn PDF document text
    • https://penanggulanganbencana.denpasarkota.go.id/new/public/ckfinder/userfiles/files/get-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://penanggulanganbencana.denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-daily-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://penanggulanganbencana.denpasarkota.go.id/new/public/ckfinder/userfiles/files/get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://penanggulanganbencana.denpasarkota.go.id/new/public/ckfinder/userfiles/files/wahoogaming-co-free-robux_GM431946152.pdfIn PDF document text
    • https://penanggulanganbencana.denpasarkota.go.id/new/public/ckfinder/userfiles/files/coin-master-hack-app-2021_GM406889139.pdfIn PDF document text
    • https://penanggulanganbencana.denpasarkota.go.id/new/public/ckfinder/userfiles/files/mc-hacks_GM479516143.pdfIn PDF document text
    • https://penanggulanganbencana.denpasarkota.go.id/new/public/ckfinder/userfiles/files/today-free-spin-coin-master_GM406889139.pdfIn PDF document text
    • https://penanggulanganbencana.denpasarkota.go.id/new/public/ckfinder/userfiles/files/coin-master-free-spins-ios-2021_GM406889139.pdfIn PDF document text
    • https://penanggulanganbencana.denpasarkota.go.id/new/public/ckfinder/userfiles/files/create-minecraft-server-free_GM479516143.pdfIn PDF document text
    • https://penanggulanganbencana.denpasarkota.go.id/new/public/ckfinder/userfiles/files/how-to-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://penanggulanganbencana.denpasarkota.go.id/new/public/ckfinder/userfiles/files/roblox-com-hack_GM431946152.pdfIn PDF document text
    • https://penanggulanganbencana.denpasarkota.go.id/new/public/ckfinder/userfiles/files/coin-master-tiradas-gratis-2021_GM406889139.pdfIn PDF document text
    • https://penanggulanganbencana.denpasarkota.go.id/new/public/ckfinder/userfiles/files/coin-master-spin-hack-2021_GM406889139.pdfIn PDF document text
    • https://penanggulanganbencana.denpasarkota.go.id/new/public/ckfinder/userfiles/files/coin-master-coins-free_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004fa5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4FA5 24608 bytes
SHA-256: 6d926c74fd33ca94c1e99c633f9992befca38512880360323628b7f17bdff360
font_01_sfnt_off00008811.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8811 4092 bytes
SHA-256: 5f209d2de47fc1d1daa3f7a159899a6156681217a4da0d2c4432eb95998bf980
font_02_sfnt_off000095e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x95E9 2788 bytes
SHA-256: 6fd7c7f447d66842f81aa8cf197935b17f22157d0c7e9f95622df1b5b4ddf530
font_03_sfnt_off00009fd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9FD9 18732 bytes
SHA-256: 9b73d77c7ba2fdf59398755aeae20ef659fba843845855bd34c74c79d9b70242

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