Malicious PDF — malware analysis report

Static analysis result for SHA-256 9cf5ee8fa0572a36…

MALICIOUS

PDF

34.7 KB Created: 2021-06-22 17:49:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: dcde200652a61beaafcb7901f68cc6b6 SHA-1: 8097010dd8fecb5b782a1da76d9bbc456e1da695 SHA-256: 9cf5ee8fa0572a36804f5d3fed45f87bff1dcd32220bedf8c9eef4c8f9dab996
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/hack-on-western-frontier-roblox-game-hack PDF link annotation
    • http://www.sourcology.com/uploaded_files/userfiles/files/free-roblox-hair-girl_GM431946152.pdfIn PDF document text
    • http://www.sourcology.com/uploaded_files/userfiles/files/minecraft-for-ipad-free_GM479516143.pdfIn PDF document text
    • http://www.sourcology.com/uploaded_files/userfiles/files/robux-free-c_GM431946152.pdfIn PDF document text
    • http://www.sourcology.com/uploaded_files/userfiles/files/can-i-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://www.sourcology.com/uploaded_files/userfiles/files/coin-master-free-redeem-code_GM406889139.pdfIn PDF document text
    • http://www.sourcology.com/uploaded_files/userfiles/files/free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://www.sourcology.com/uploaded_files/userfiles/files/rblx-city-free-robux_GM431946152.pdfIn PDF document text
    • http://www.sourcology.com/uploaded_files/userfiles/files/coin-master-free-spins-link-today-instagram_GM406889139.pdfIn PDF document text
    • http://www.sourcology.com/uploaded_files/userfiles/files/free-tiktok-followers_GM835599320.pdfIn PDF document text
    • http://www.sourcology.com/uploaded_files/userfiles/files/coin-master-free-spins-and-coins-haktuts_GM406889139.pdfIn PDF document text
    • http://www.sourcology.com/uploaded_files/userfiles/files/hacker-usernames-for-roblox_GM431946152.pdfIn PDF document text
    • http://www.sourcology.com/uploaded_files/userfiles/files/how-to-get-minecraft-for-free-on-iphone-2021_GM479516143.pdfIn PDF document text
    • http://www.sourcology.com/uploaded_files/userfiles/files/free-robux-hacks-that-work_GM431946152.pdfIn PDF document text
    • http://www.sourcology.com/uploaded_files/userfiles/files/robux-earning-websites_GM431946152.pdfIn PDF document text
    • http://www.sourcology.com/uploaded_files/userfiles/files/free-rewards-coin-master_GM406889139.pdfIn PDF document text
    • http://www.sourcology.com/uploaded_files/userfiles/files/free-robux-real-working_GM431946152.pdfIn PDF document text
    • http://www.sourcology.com/uploaded_files/userfiles/files/hack-coin-master-online-without-human-verification_GM406889139.pdfIn PDF document text
    • http://www.sourcology.com/uploaded_files/userfiles/files/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://www.sourcology.com/uploaded_files/userfiles/files/www-coin-master-hack-com_GM406889139.pdfIn PDF document text
    • http://www.sourcology.com/uploaded_files/userfiles/files/free-minecraft-skin-maker_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_off000032b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32B8 21572 bytes
SHA-256: caac7c6660de57d3bd30751a22f74145013260483ecce3cf7b7c6c951d4c65c6
font_01_sfnt_off0000620f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x620F 19244 bytes
SHA-256: f40d7afd97f5172afd429a6b774bf4b6b18ce4cbf3adb35a967b05f064f39e2b

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