Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb42e06a9e94fb3c…

MALICIOUS

PDF

35.4 KB Created: 2021-07-03 12:44:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-22
MD5: d8e58d11c7292e08c65c016bb3f26244 SHA-1: 12997841485a9d1a4d958e7382f296d39de5b46c SHA-256: fb42e06a9e94fb3cd7debcaf0f02089d756a776674fdcd6aadacdae55ddc62d2
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-hack-apk-35-11-game-hack PDF link annotation
    • http://perpustakaan.pa-dompu.go.id/repository/roblox-fly-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/coin-master-free-spins-11-01-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/static-moonactive-net-link_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id//repository/unlimited-spin-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id//repository/free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/zombie-attack-roblox-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/roblox-demo-free-play_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/free-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/2021-btools-hack-for-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/roblox-free-robux-app_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/robux-hack-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/gravity-switch-hack-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/roblox-survey-for-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id//repository/coin-master-hack-xyz-download-free_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/freespincoin-masterlinkdownload_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id//repository/optifine-mcpe_GM479516143.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/roblox-robux-hack-cheat-engine_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/cheats-for-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/roblox-hack-script-pastebin_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/www-cheatsguru-com-pc-roblox-cheats-codes_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_off00003261.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3261 23352 bytes
SHA-256: b1a7a0be6675663ba5b89d731a472ce2e0301ef6d666ad967d73ff30343eddf6
font_01_sfnt_off000066d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66D4 18592 bytes
SHA-256: 7f49051940b6b9efc6132f30ff89e7b8d09fd75ee36cd2478622d195921c531a

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