Malicious PDF — malware analysis report

Static analysis result for SHA-256 df688594b7de50fe…

MALICIOUS

PDF

34.8 KB Created: 2021-07-05 12:31:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 42d076bc4244c8f0399de90ec58aa8d3 SHA-1: d290a4dc15530c7b8a870ce2140d3b237ef810ab SHA-256: df688594b7de50fe3efa50569b68dee78dd5b422128cacab19c341d55da2cc2e
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/431946152/free-robux-mod-game-hack PDF link annotation
    • http://library.apsidoarjo.ac.id//repository/free-minecraft-mods-for-pc_GM479516143.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/how-to-get-a-free-roblox-gift-card-code_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/minecraft-login-free_GM479516143.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-roblox-codes-2021_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-robux-esy_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-robux-virus_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/hacks-for-roblox-no-human-vertifcation_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/hack-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/hack-robux-2021-pc_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/destruction-simulator-roblox-hack_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/exploit-hack-bee-sworm-simulator-roblox_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/how-to-make-clothes-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/legit-coin-master-hack-october-2021_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/how-to-redeem-a-roblox-card-for-free_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/how-to-get-free-roblox-money_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/hacking-for-games-on-android-roblox_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/case-clicker-roblox-cheat_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/roblox-free-robux-codes-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/pokemon-go-basic-vs-premium_GM1094591345.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/minecraft-hacks-18-9_GM479516143.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_off0000328f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x328F 21876 bytes
SHA-256: 809f1b40661e3673ec844551eba8f681877a10c1f74ed9299cc18f4c2fc5931d
font_01_sfnt_off000062f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62F0 19088 bytes
SHA-256: 3c56140fee9dfb5ded46378f21a8de948775312b2d7b3282d1f8cc46bd34fe6a

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