Malicious PDF — malware analysis report

Static analysis result for SHA-256 c61776ea9be43be2…

MALICIOUS

PDF

35.3 KB Created: 2021-07-02 06:18:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: bc6ce34a20d56bc5848d9d0644dca855 SHA-1: d84f5efa9e9ab8a08359fe96db5e5cb2895f4455 SHA-256: c61776ea9be43be20af674070fef2cb77a0a9477e0e935b7339afe90e377883b
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/cheats-for-blodody-mary-roblox-game-hack PDF link annotation
    • https://unsla.uns.ac.id:443/pgsd/repository/coinmaster-blogspot_GM406889139.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/free-robux-glitch-no-hack-2021_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/free-links-coin-master_GM406889139.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/coin-master-hack-2021-apk_GM406889139.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/roblox-noclip-hack-download-ipad_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/roblox-free-for-tablet_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/free-roblox-clothes-girl_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/robux-generators-that-actually-work_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/roblox-vietnam-2021-aimbot-hack_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/rollercoaster-tycoon-roblox-cheats_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/how-to-change-your-name-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/free-robux-without-human-verification-real_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/roblox-free-bubble-gum-privat-server_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/roblox-racing-cheat-codes_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/bloxawards-com-earn-free-robux_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/how-to-hack-a-roblox-account-password-2021_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/how-to-get-free-girl-hair-on-roblox_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/how-to-get-a-free-seer-in-roblox-mm2_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/hack-roblox-cheat-engine-61_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/release-boku-no-roblox-remastered-hack_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_off00003299.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3299 22172 bytes
SHA-256: f31eb246ef56d21f6d96dd83ca900f446802595c5b08ba3b9afc4ff00e5fd911
font_01_sfnt_off000063b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63B7 19468 bytes
SHA-256: 1a6cec3faebcddf178bda3795261bca16e71af45625d98c1c84c2372ed6779f4

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