Malicious PDF — malware analysis report

Static analysis result for SHA-256 30842d1fd56fa37e…

MALICIOUS

PDF

35.0 KB Created: 2021-06-29 21:32:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 396d2aba6ff1965bdd89a9d732e9050b SHA-1: 126cb80822580d6a3d9dc51874b6a197d3550560 SHA-256: 30842d1fd56fa37eb1e7231d3bbaec0179ab90e84da0f2c692185d771c8a837e
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/free-interview-in-roblox-studio-game-hack PDF link annotation
    • http://lib.smklabor.sch.id/repository/robux-free-2021_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/daily-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/coin-master-unlimited-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/exploit-hacks-for-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/coin-master-game-hacks_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-robux-that-actually-works-2021_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/roblox-how-to-hack-ultimate-driving-with-cheat-engine-64_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/cheat-engine-roblox-shut-down_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/roblox-money-hack-tool_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/account-stealing-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/minecraft-win-10-free_GM479516143.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/spin-free-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/totally-free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-spins-coin-master-blogspot_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/paginas-para-hackear-roblox_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-minecraft-skins-java_GM479516143.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-robux-no-human-verification-no-download-2021_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/coin-master-hack-apk_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/how-to-hack-someones-roblox-account_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_off00002fc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FC3 22820 bytes
SHA-256: 0f8ae8e367cb011726dbbbfe39e4f9ce5729348dd0b3a83f650033efda2f4e53
font_01_sfnt_off000062a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62A2 19468 bytes
SHA-256: e2a452d07f34394798fd11ddb411a362c3c90d9d8464fe7cbb365c98278df6d1

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