Malicious PDF — malware analysis report

Static analysis result for SHA-256 1fc785360f8cd993…

MALICIOUS

PDF

35.6 KB Created: 2021-06-26 14:32:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 1dc5403e404a5961dd140b056f973318 SHA-1: 68726283b73f4de18475d7e09a4103f754ed2540 SHA-256: 1fc785360f8cd99345f3354213bb05ce11fee552fdd4c03a82b49457d7c1e510
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/how-to-get-free-outrageous-and-robux-earrapr-game-hack PDF link annotation
    • http://elearningman2jember.com/__statics/gudangsoal/files/roblox-gang-rape_GM431946152.pdfIn PDF document text
    • https://elearningman2jember.com/__statics/gudangsoal/files/generator-robux_GM431946152.pdfIn PDF document text
    • http://elearningman2jember.com/__statics/gudangsoal/files/island-life-hack-script-roblox_GM431946152.pdfIn PDF document text
    • https://elearningman2jember.com/__statics/gudangsoal/files/coinmaster-twitter_GM406889139.pdfIn PDF document text
    • http://elearningman2jember.com/__statics/gudangsoal/files/minecraft-pe-apk-free-download_GM479516143.pdfIn PDF document text
    • https://elearningman2jember.com/__statics/gudangsoal/files/cool-roblox-high-school-cheats_GM431946152.pdfIn PDF document text
    • http://elearningman2jember.com/__statics/gudangsoal/files/coin-master-apk-hack_GM406889139.pdfIn PDF document text
    • https://elearningman2jember.com/__statics/gudangsoal/files/minecraft-skins-free-girl_GM479516143.pdfIn PDF document text
    • http://elearningman2jember.com/__statics/gudangsoal/files/minecraft-mods-download-free_GM479516143.pdfIn PDF document text
    • https://elearningman2jember.com/__statics/gudangsoal/files/how-to-make-a-minecraft-server-for-free-java_GM479516143.pdfIn PDF document text
    • https://elearningman2jember.com/__statics/gudangsoal/files/roblox-gift-card-free-codes_GM431946152.pdfIn PDF document text
    • http://elearningman2jember.com/__statics/gudangsoal/files/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://elearningman2jember.com/__statics/gudangsoal/files/how-to-pubg-uc_GM1330123889.pdfIn PDF document text
    • http://elearningman2jember.com/__statics/gudangsoal/files/dailyrobux_GM431946152.pdfIn PDF document text
    • https://elearningman2jember.com/__statics/gudangsoal/files/free-coin-master-hacks-no-verification_GM406889139.pdfIn PDF document text
    • https://elearningman2jember.com/__statics/gudangsoal/files/is-minecraft-java-edition-free_GM479516143.pdfIn PDF document text
    • http://elearningman2jember.com/__statics/gudangsoal/files/coinmaster-free-cards_GM406889139.pdfIn PDF document text
    • https://elearningman2jember.com/__statics/gudangsoal/files/how-to-hack-in-a-hacked-account-in-roblox_GM431946152.pdfIn PDF document text
    • https://elearningman2jember.com/__statics/gudangsoal/files/robux-free-co_GM431946152.pdfIn PDF document text
    • https://elearningman2jember.com/__statics/gudangsoal/files/roblox-robux-hack-online-generator-tool-no-download_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_off00003412.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3412 22016 bytes
SHA-256: ccb067bc0181623a0e3790858f9c6c1545d183e54ff944542196fcf497e86371
font_01_sfnt_off0000650b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x650B 19336 bytes
SHA-256: c8810635cc9859667f266aee26ca2222798f4d395f8542f2a9fc3888669c738f

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