Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7a88c6d0b65717e…

MALICIOUS

PDF

45.6 KB Created: 2021-06-03 08:00:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 6f76025dbbc7efb982be017518e50b2e SHA-1: 867fcdb3d388a3d3fc022b4e61438ac3c9b0a1f4 SHA-256: b7a88c6d0b65717ed44f719978f9387094b9ece1f3056cac7d813ca36e39da63
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for 'Free Robux' and links to external URLs, indicating a phishing or scam attempt. The ML classifier strongly flagged this PDF as malicious, and heuristics identified it as a game hack redirect lure. No scripts were extracted, but the presence of embedded URLs suggests a potential for further malicious activity upon user interaction.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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 https://netcdn.online/app/431946152/free-robux-app-2021-game-hack PDF link annotation
    • https://allhimalayantreks.com/userfiles/files/www-robux-redeem_GM431946152.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/how-to-get-free-daily-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/coin-master-mod-version-free-download-34-4_GM406889139.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/tiktok-free-no-sign-in_GM835599320.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/free-roblox-intros_GM431946152.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/how-to-get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/free-robux-com_GM431946152.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/free-minecraft-server-hosting-24-7_GM479516143.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/roblox-verification_GM431946152.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/mine-minecraft-games-for-free_GM479516143.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/how-to-block-someone-on-coin-master_GM406889139.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/claim-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/mcpe-master-hack-coins_GM406889139.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/coin-spin-link_GM406889139.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/how-do-we-get-free-robux_GM431946152.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/free-robux-generator-no-survey_GM431946152.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/minecraft-toys-for-free_GM479516143.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/can-you-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/coin-master-free-coins-and-spins-daily_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_off00005023.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5023 27660 bytes
SHA-256: a6265512655dc0aeea6ce0b0b28638855304af1335af3716fd24d721a9974dd7
font_01_sfnt_off00008ea0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EA0 18592 bytes
SHA-256: 60f15d8ca37119d38c609a47832113b3700b54b9c09a2f40fa09148dabf0e544

Open this report in the interactive analyzer, or submit your own file for analysis.