Malicious PDF — malware analysis report

Static analysis result for SHA-256 151c7cc96835d44b…

MALICIOUS

PDF

44.0 KB Created: 2021-05-17 16:39:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 277fc96b3b23d106906232317a6991d1 SHA-1: 94e0905dededf5899714efa69b07f34be1140725 SHA-256: 151c7cc96835d44b1b7608da149f64b6808c82f0f348d499fb8b6292f9856960
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/431946152/boku-no-roblox-hack-game-hack PDF link annotation
    • https://pn-amlapura.go.id/new/public/ckfinder/userfiles/files/coin-master-free-spins-and-coins-for-iphone_GM406889139.pdfIn PDF document text
    • https://pn-amlapura.go.id/new/public/ckfinder/userfiles/files/coin-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://pn-amlapura.go.id/new/public/ckfinder/userfiles/files/coin-master-free-spin-link-today-2021_GM406889139.pdfIn PDF document text
    • https://pn-amlapura.go.id/new/public/ckfinder/userfiles/files/how-to-get-more-robux-for-free_GM431946152.pdfIn PDF document text
    • https://pn-amlapura.go.id/new/public/ckfinder/userfiles/files/how-to-duplicate-coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • https://pn-amlapura.go.id/new/public/ckfinder/userfiles/files/getrobux-ninja_GM431946152.pdfIn PDF document text
    • https://pn-amlapura.go.id/new/public/ckfinder/userfiles/files/free-links-coin-master_GM406889139.pdfIn PDF document text
    • https://pn-amlapura.go.id/new/public/ckfinder/userfiles/files/get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://pn-amlapura.go.id/new/public/ckfinder/userfiles/files/rewards-roblox_GM431946152.pdfIn PDF document text
    • https://pn-amlapura.go.id/new/public/ckfinder/userfiles/files/coin-master-hack-free-spins_GM406889139.pdfIn PDF document text
    • https://pn-amlapura.go.id/new/public/ckfinder/userfiles/files/get-robux-now_GM431946152.pdfIn PDF document text
    • https://pn-amlapura.go.id/new/public/ckfinder/userfiles/files/minecraft-xbox-one-code-free_GM479516143.pdfIn PDF document text
    • https://pn-amlapura.go.id/new/public/ckfinder/userfiles/files/minecraft-free-download-mac-full-version_GM479516143.pdfIn PDF document text
    • https://pn-amlapura.go.id/new/public/ckfinder/userfiles/files/how-to-get-hacks-on-minecraft_GM479516143.pdfIn PDF document text
    • https://pn-amlapura.go.id/new/public/ckfinder/userfiles/files/how-to-get-free-pets-in-adopt-me-roblox_GM431946152.pdfIn PDF document text
    • https://pn-amlapura.go.id/new/public/ckfinder/userfiles/files/free-robux-no-human-verification-or-survey-or-download_GM431946152.pdfIn PDF document text
    • https://pn-amlapura.go.id/new/public/ckfinder/userfiles/files/free-roblox-gift-card_GM431946152.pdfIn PDF document text
    • https://pn-amlapura.go.id/new/public/ckfinder/userfiles/files/coin-master-heaven-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • https://pn-amlapura.go.id/new/public/ckfinder/userfiles/files/descargar-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://pn-amlapura.go.id/new/public/ckfinder/userfiles/files/how-to-hack-into-someones-roblox-account_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_off00004b02.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B02 27720 bytes
SHA-256: b6904649985ac3ca9f56561be37ce1b42f76319c17a927a969078bf554f24a47
font_01_sfnt_off000089ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89AB 18320 bytes
SHA-256: cd83af5ba5492d0d90d9a213d6c06333e9cd9f39d2b07ffbf91c7f3a8ed3d34e

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