Malicious PDF — malware analysis report

Static analysis result for SHA-256 167ecdf038a28f75…

MALICIOUS

PDF

44.1 KB Created: 2021-06-09 02:21:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 9e72e935ba90d63f290180c4f2390b68 SHA-1: 59c39e1d1e33d95e99ee094464d7a6a22c92cecc SHA-256: 167ecdf038a28f758c75c8fb2450e416d648c748eaf8957b1c6466eda7f29190
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 0.9865

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.tw/app/431946152/hacks-roblox-the-streets-game-hack PDF link annotation
    • http://perpustakaan.pa-dompu.go.id//repository/free-robux-only-username-no-human-verification_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/minecraft-for-laptop-free_GM479516143.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id//repository/tiktok-free-view-year_GM835599320.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id//repository/minecraft-free-download-windows-10_GM479516143.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id//repository/minecraft-hacks-xbox-one_GM479516143.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/free-robux-codes-and-free-roblox-promo-codes-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/hack-robux-redboy_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/tiktok-free-view-quest_GM835599320.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/cm-free-spins_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id//repository/get-robux-com_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id//repository/is-it-possible-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id//repository/free-pokemon-go-joystick-2021_GM1094591345.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id//repository/coin-master-claim-free-spins_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id//repository/coin-master-hack-2021-app-download_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/how-to-download-minecraft-for-free-on-your-phone_GM479516143.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/liberty-county-roblox-free_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/minecraft-java-edition-free-download-for-android_GM479516143.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/spins-gratis-coin-master-hoy_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/robuxlove-net-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/free-robux-no-survey-or-human-verification_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_004_off000050dd.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50DD 24568 bytes
SHA-256: 13aae10cde883c1356a1ba6fad988336bb8ab54baf8b33b195621707437992c6
font_01_sfnt_off000088fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88FD 18452 bytes
SHA-256: 257612ce9f354e7c3090945f795a38a58322e8b9fdd04404c20b9be1e2674a7e

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