Malicious PDF — malware analysis report

Static analysis result for SHA-256 64087ca133c44c04…

MALICIOUS

PDF

43.7 KB Created: 2021-05-13 22:32:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: fbada0ccb58f80ba8250d0593760fbe0 SHA-1: 5eea8cb12c42d0e96ffd2d20f239fa27ff09dd5f SHA-256: 64087ca133c44c04406aca6f82fd20856a7f721a69dc0974a60cbd5a12d19511
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. It uses a callback-phone (TOAD) lure. 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 5

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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/431946152/roblox-hack-2021-game-hack PDF link annotation
    • https://rsudwangaya.denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-avatar-roblox_GM431946152.pdfIn PDF document text
    • https://rsudwangaya.denpasarkota.go.id/new/public/ckfinder/userfiles/files/coin-master-hack-apk-july-29_GM406889139.pdfIn PDF document text
    • https://rsudwangaya.denpasarkota.go.id/new/public/ckfinder/userfiles/files/www-roblox-com-robux-free_GM431946152.pdfIn PDF document text
    • https://rsudwangaya.denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-shirt-templates-roblox_GM431946152.pdfIn PDF document text
    • https://rsudwangaya.denpasarkota.go.id/new/public/ckfinder/userfiles/files/minecraft-hacked-client-112-2_GM479516143.pdfIn PDF document text
    • https://rsudwangaya.denpasarkota.go.id/new/public/ckfinder/userfiles/files/how-to-get-free-unlimited-robux_GM431946152.pdfIn PDF document text
    • https://rsudwangaya.denpasarkota.go.id/new/public/ckfinder/userfiles/files/robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • https://rsudwangaya.denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-spins-in-coin-master-without-human-verification_GM406889139.pdfIn PDF document text
    • https://rsudwangaya.denpasarkota.go.id/new/public/ckfinder/userfiles/files/real-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://rsudwangaya.denpasarkota.go.id/new/public/ckfinder/userfiles/files/minecraft-free-no-virus_GM479516143.pdfIn PDF document text
    • https://rsudwangaya.denpasarkota.go.id/new/public/ckfinder/userfiles/files/how-to-make-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://rsudwangaya.denpasarkota.go.id/new/public/ckfinder/userfiles/files/how-to-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://rsudwangaya.denpasarkota.go.id/new/public/ckfinder/userfiles/files/get-free-robux-gg_GM431946152.pdfIn PDF document text
    • https://rsudwangaya.denpasarkota.go.id/new/public/ckfinder/userfiles/files/how-to-hack-roblox-accounts-on-phone_GM431946152.pdfIn PDF document text
    • https://rsudwangaya.denpasarkota.go.id/new/public/ckfinder/userfiles/files/coin-master-online-hack-no-survey-no-password_GM406889139.pdfIn PDF document text
    • https://rsudwangaya.denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-roblox-premium_GM431946152.pdfIn PDF document text
    • https://rsudwangaya.denpasarkota.go.id/new/public/ckfinder/userfiles/files/robux-for-surveys_GM431946152.pdfIn PDF document text
    • https://rsudwangaya.denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-robux-no-human-verification-or-survey-or-download_GM431946152.pdfIn PDF document text
    • https://rsudwangaya.denpasarkota.go.id/new/public/ckfinder/userfiles/files/coin-master-hack-ios-no-jailbreak_GM406889139.pdfIn PDF document text
    • https://rsudwangaya.denpasarkota.go.id/new/public/ckfinder/userfiles/files/how-to-get-free-robux-on-android_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004c98.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C98 25404 bytes
SHA-256: f088e6668392632a742b378af66f4d1193d645e0f5d8b7588e07082b8dee4a17
font_01_sfnt_off00008754.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8754 18584 bytes
SHA-256: 2941163c9806e22b58ea5552aa71059231a9f2c3bbffbca0ecd460ca17501cff

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