Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1048ba20f79f6a7…

MALICIOUS

PDF

46.6 KB Created: 2021-06-03 22:22:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: fd0b21603706013d5e3c9f5f4e5a68a0 SHA-1: a537e36a255c9408a8eb09f0646b8e09c0b899d3 SHA-256: d1048ba20f79f6a7375df1cb21beaed5cb4428a43b82230919a7f3f8ca63559c
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-severity heuristic firing for a game hack redirect lure, specifically mentioning 'how to hack roblox accounts'. The document body, though partially corrupted, contains similar text and an embedded URL pointing to a site offering game hacks. This suggests the primary purpose is to trick users into visiting a malicious URL, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

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.online/app/431946152/how-to-hack-roblox-accounts-2021-game-hack PDF link annotation
    • http://perpustakaan.pa-dompu.go.id/repository/pubg-uc-free-redeem-code_GM1330123889.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/get-free-lives-on-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/hack-master-coin_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/moonactive-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/hack-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id//repository/coin-master-free-pet-food-links_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/coin-master-club-hack_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id//repository/sites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id//repository/hack-card-collection-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/archery-master-3d-coins-hack_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/minecraft-free-install_GM479516143.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id//repository/coin-master-free-spins-for-today_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id//repository/free-robux-generator-no-verification_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/free-roblox-accounts-dantdm_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id//repository/free-coins-coin-master-link_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id//repository/coin-master-daily-free-spins-today_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id//repository/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/2021-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id//repository/best-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/hack-coin-master-ios-download_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
stream_004_off00005079.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5079 29356 bytes
SHA-256: b56ca235a638500b83c0d3530f2149cf79c5fe105644282a27ef0131a7ca7915
font_01_sfnt_off00009167.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9167 18992 bytes
SHA-256: 91904dcb98687fcf58c7b52e545a9fbf658b3e4d1998331468638ebaf1d03505

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