Malicious PDF — malware analysis report

Static analysis result for SHA-256 2da2dd9afab31754…

MALICIOUS

PDF

43.2 KB Created: 2021-05-17 19:00:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: b15ffd6fd5f2556215ca15bc94536ecd SHA-1: afe408f07884f593d0e19b1dc60f7ff9ec4f6f11 SHA-256: 2da2dd9afab317545e6ced89e7473f4708e975406301efb5355b52136ec3088b
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 0.9969

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/daily-free-spins-coin-master-2021-game-hack PDF link annotation
    • https://ppid.bulelengkab.go.id/new/public/ckfinder/userfiles/files/robux-free-gift-card-org-hack_GM431946152.pdfIn PDF document text
    • https://ppid.bulelengkab.go.id/new/public/ckfinder/userfiles/files/coin-master-levels_GM406889139.pdfIn PDF document text
    • https://ppid.bulelengkab.go.id/new/public/ckfinder/userfiles/files/coinmaster-spins_GM406889139.pdfIn PDF document text
    • https://ppid.bulelengkab.go.id/new/public/ckfinder/userfiles/files/get-free-spins-coin-master-october-2021_GM406889139.pdfIn PDF document text
    • https://ppid.bulelengkab.go.id/new/public/ckfinder/userfiles/files/free-bedrock-minecraft_GM479516143.pdfIn PDF document text
    • https://ppid.bulelengkab.go.id/new/public/ckfinder/userfiles/files/coin-master-hack-facebook_GM406889139.pdfIn PDF document text
    • https://ppid.bulelengkab.go.id/new/public/ckfinder/userfiles/files/minecraft-java-account-free_GM479516143.pdfIn PDF document text
    • https://ppid.bulelengkab.go.id/new/public/ckfinder/userfiles/files/get-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://ppid.bulelengkab.go.id/new/public/ckfinder/userfiles/files/free-robux-no-email_GM431946152.pdfIn PDF document text
    • https://ppid.bulelengkab.go.id/new/public/ckfinder/userfiles/files/how-to-get-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://ppid.bulelengkab.go.id/new/public/ckfinder/userfiles/files/free-roblox-executor-no-key_GM431946152.pdfIn PDF document text
    • https://ppid.bulelengkab.go.id/new/public/ckfinder/userfiles/files/minecraft-server-free-trial_GM479516143.pdfIn PDF document text
    • https://ppid.bulelengkab.go.id/new/public/ckfinder/userfiles/files/coin-master-daily-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://ppid.bulelengkab.go.id/new/public/ckfinder/userfiles/files/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • https://ppid.bulelengkab.go.id/new/public/ckfinder/userfiles/files/robux-gainer_GM431946152.pdfIn PDF document text
    • https://ppid.bulelengkab.go.id/new/public/ckfinder/userfiles/files/coin-master-game-free-play-online_GM406889139.pdfIn PDF document text
    • https://ppid.bulelengkab.go.id/new/public/ckfinder/userfiles/files/blogspot-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://ppid.bulelengkab.go.id/new/public/ckfinder/userfiles/files/free-links-for-coin-master_GM406889139.pdfIn PDF document text
    • https://ppid.bulelengkab.go.id/new/public/ckfinder/userfiles/files/free-coin-master-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://ppid.bulelengkab.go.id/new/public/ckfinder/userfiles/files/free-roblox-avatar-ideas_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_003_off00004ac8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AC8 25180 bytes
SHA-256: 714c7dc1170578dd01649fc91ec74cd0e7b0d41a26aa33c3e0b25118a975ffc4
font_01_sfnt_off00008554.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8554 18708 bytes
SHA-256: 76af36f54327e394f6a0995f5c1804c6d580e71cb7eebf938ec25838add40309

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