Malicious PDF — malware analysis report

Static analysis result for SHA-256 de1279437cb9c481…

MALICIOUS

PDF

34.6 KB Created: 2021-06-30 15:01:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 7c92ca78ba6201017ebba7f8ec7bd3c2 SHA-1: d8bab8682d9291f9d972e9cf6f3e4849bd1d870b SHA-256: de1279437cb9c48174c040b403f51ca249c6e92cd70e443a943adb04ea9a9609
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.co/app/431946152/how-to-hack-roblox-accounts-with-pastebin-game-hack PDF link annotation
    • https://pt-mataram.go.id/perpustakaan/repository/free-robux-not-fake_GM431946152.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/windows-10-minecraft-free-with-java_GM479516143.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/roblox-tower-of-hell-cheat_GM431946152.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/minecraft-survival-free_GM479516143.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/free-minecraft-server-maker_GM479516143.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/roblox-free-robux-obby-by-elevanoz_GM431946152.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/hack-the-game-coin-master_GM406889139.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/minecraft-ps4-free_GM479516143.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/free-robux-boombox_GM431946152.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/hack-free-spin-coin-master_GM406889139.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/free-roblox_GM431946152.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/coin-master-free-spins-generator-no-human-verification_GM406889139.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/free-robux-generator-no-verification_GM431946152.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/coin-master-free-spins-2021-blogspot_GM406889139.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/fre-shavacado-compilation-roblox-id_GM431946152.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/free-robux-pin-codes_GM431946152.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/free-robux-and-tix-generator-no-survey-or-download_GM431946152.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/how-much-tiktok-free-account_GM835599320.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/free-roblox-premium_GM431946152.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/coin-master-free-spin-app-reviews_GM406889139.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
font_00_sfnt_off00002f85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F85 22076 bytes
SHA-256: a22e4a3a54c9cd80e94c8fa8bdcc30c3f3bb75d9ee54c8bfc4e0641ef94726e5
font_01_sfnt_off0000606e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x606E 19700 bytes
SHA-256: 8e23eecbe52164a4ef84d5f7076d730eb3dae95256e11557a56fc77d5ebcb2dd

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