Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9d455d4b08310dc…

MALICIOUS

PDF

33.2 KB Created: 2021-06-26 04:32:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 26a1ed4eb36090abfd673faf28b8a16b SHA-1: bf29160514fb6c0e2059b4b0b0e7f7a273c71f8b SHA-256: e9d455d4b08310dc9bc4d9adc9bd7939570c46a6fd44b50662279086c5e399ea
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of "Free Roblox Game Card" to entice users to click on a link. The link, http://netcdn.co/app/431946152/free-roblox-game-card-game-hack, redirects to a malicious site, likely to deliver a payload or conduct further phishing. The ML classifier strongly supports the malicious verdict, and the presence of numerous game-related lures indicates a common social engineering tactic.

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/free-roblox-game-card-game-hack PDF link annotation
    • https://digilib.stimlog.ac.id/repository/https-mobihack-net-roblox-hack_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/robux-pin-free-no-verification_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/pokemon-go-free-game_GM1094591345.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/minecraft-font-free_GM479516143.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/coin-master-free-spins-and-coins-today_GM406889139.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/earn-gg-free-robux_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/elemental-battlegrouds-roblox-hack_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/free-roblox-groups_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/dominus-roblox-free_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/boku-no-roblox-hack_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-spins-coin-master-facebook_GM406889139.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/free-mods-for-minecraft-pe_GM479516143.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/get-free-likes-on-tiktok_GM835599320.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/free-coin-and-spin-for-coin-master_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/roblox-font-free_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/free-roblox-western-outfit_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/coin-master-hacks-no-surveys_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-robux-codes-no-verification-2021_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
font_00_sfnt_off00002dc0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DC0 21364 bytes
SHA-256: 78809b22e91980c959a9651c4757fbbefae310002d8e91bb1de103ad96bc60e3
font_01_sfnt_off00005c4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C4F 19084 bytes
SHA-256: 8d8fe722e2d2f782bf852da96cad31a1cc2b0cfb4d98f4630837f3de97f0d8c9

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