Malicious PDF — malware analysis report

Static analysis result for SHA-256 01f5e1c61bd65fdc…

MALICIOUS

PDF

35.1 KB Created: 2021-07-08 22:02:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: fe6add2bf2a58a665037477a59a5e8ad SHA-1: 3609bec5f6cbf75dd1c0571395084fe73282d8af SHA-256: 01f5e1c61bd65fdc67f3bd6ab85d7074fde4784c3d6fe38089d57e8ecb83cfee
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-severity heuristic firing indicating it links to a 'free generator / game hack' redirector. The document body and extracted URLs reinforce this, pointing to lures for free Robux and game hacks. The primary IOC is the malicious URL used in these lures, which likely serves as a gateway to malicious content or further compromise.

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.tw/app/431946152/how-to-actually-get-free-robux-game-hack PDF link annotation
    • https://www.knjiznica-oroslavje.hr/files/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • https://www.knjiznica-oroslavje.hr/files/how-to-get-a-face-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://www.knjiznica-oroslavje.hr/files/how-to-download-minecraft-for-free-on-windows-10_GM479516143.pdfIn PDF document text
    • http://knjiznica-oroslavje.hr/files/roblox-gift-card-for-free_GM431946152.pdfIn PDF document text
    • http://knjiznica-oroslavje.hr/files/roblox-robux-credit-card-free-2021_GM431946152.pdfIn PDF document text
    • https://www.knjiznica-oroslavje.hr/files/free-spins-coin-master-unlimited_GM406889139.pdfIn PDF document text
    • https://www.knjiznica-oroslavje.hr/files/http-proxy-site-free-robux_GM431946152.pdfIn PDF document text
    • https://www.knjiznica-oroslavje.hr/files/what-pubg-uc-code_GM1330123889.pdfIn PDF document text
    • https://www.knjiznica-oroslavje.hr/files/coin-master-free-spins-hack-ios_GM406889139.pdfIn PDF document text
    • http://knjiznica-oroslavje.hr/files/how-to-get-free-robux-and-builders-club-2021_GM431946152.pdfIn PDF document text
    • http://knjiznica-oroslavje.hr/files/roblox-2021-november-25-jailbreak-hack_GM431946152.pdfIn PDF document text
    • http://knjiznica-oroslavje.hr/files/boku-no-roblox-hack_GM431946152.pdfIn PDF document text
    • https://www.knjiznica-oroslavje.hr/files/how-to-get-free-hair-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://www.knjiznica-oroslavje.hr/files/get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.knjiznica-oroslavje.hr/files/best-free-roblox-outfits_GM431946152.pdfIn PDF document text
    • https://www.knjiznica-oroslavje.hr/files/roblox-plane-blueprints-free_GM431946152.pdfIn PDF document text
    • http://knjiznica-oroslavje.hr/files/copy-and-paste-for-free-robux_GM431946152.pdfIn PDF document text
    • http://knjiznica-oroslavje.hr/files/free-robux-discord-servers_GM431946152.pdfIn PDF document text
    • http://knjiznica-oroslavje.hr/files/coin-master-real-free-spins_GM406889139.pdfIn PDF document text
    • https://www.knjiznica-oroslavje.hr/files/fast-robux-online_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_off0000322d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x322D 22280 bytes
SHA-256: 4f5f7ea4769029de4587421a4b62636319e39532541e81c272d5bbd336e81571
font_01_sfnt_off000063b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63B2 19240 bytes
SHA-256: caa3459e2df0c933814d087edfbfcbd5173e9d054867d82a012ee6c61ee7aa1c

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