Malicious PDF — malware analysis report

Static analysis result for SHA-256 7043b9cbd339f5d1…

MALICIOUS

PDF

32.8 KB Created: 2021-07-10 01:30:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 098f2547f9d8751d301b2e09e76766c7 SHA-1: ab065045d264d83193578e4655c5af430408c7ae SHA-256: 7043b9cbd339f5d15643795d00b11a8eafb5a5941742ae12c8ea35347ea54eb6
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

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 0.9824

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/406889139/daily-free-spins-for-coin-master-game-hack PDF link annotation
    • https://financia-business-school.com/static/upload/files/how-to-get-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/counter-blox-roblox-offensive-hack-free_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/are-minecraft-realms-free_GM479516143.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/robux-hack-no-reward-in-survey_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/coin-master-pro-hack_GM406889139.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/como-hackear-cuentas-de-roblox-sin-contrasea_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/coin-master-free-spin-and-coins-links-2021_GM406889139.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/coin-master-hack-tool-no-human-verification_GM406889139.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/coin-master-free-gold-cards_GM406889139.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/roblox-how-to-get-free-bc_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/how-do-you-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/roblox-jailbreak-hack_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/minecraft-java-free-download_GM479516143.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/coin-master-free-spins-daily-1-ga_GM406889139.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/minecraft-pvp-hacks_GM479516143.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/actual-free-robux_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/javascript-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/cheat-roblox-sound_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/free-coin-master-androd-cheats-2021_GM406889139.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_off00002bf2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2BF2 22088 bytes
SHA-256: abddf12b6467b04ec27452fdf6e6aed1511dc9fa8a2d3297607b2bb2abdc7c58
font_01_sfnt_off00005d0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D0C 18596 bytes
SHA-256: d68a34b156bc539a9175b9519b639082689f9c1ce84e1c9e30ec2d7eb2f7d22d

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