Malicious PDF — malware analysis report

Static analysis result for SHA-256 62a8d7b866e4e181…

MALICIOUS

PDF

34.7 KB Created: 2021-07-07 07:38:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 5ad4e87ed9a7723ff81d690499943e54 SHA-1: 54fee1145e32029631bfd4b4b1ba441770852d9f SHA-256: 62a8d7b866e4e181fb5d45b79cbeae4902d218a084d9201bc1246b8f8f2f9b2a
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.tw/app/431946152/roblox-free-download-game-hack PDF link annotation
    • https://tanahlot.id/assets/CKImages/files/get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/how-to-get-lots-of-robux-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/roblox-avatar-editor-free_GM431946152.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/today-free-spin-coin-master_GM406889139.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/robux-in-1min-hacken_GM431946152.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/how-to-get-free-robux-no-inspect-element-no-wait_GM431946152.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/roblox-arsenal-hacks-download_GM431946152.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/free-robux-for-samsung_GM431946152.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/coin-master-daily-spin-free_GM406889139.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/earn-robux-sites_GM431946152.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/get-free-spins-coin-master-link_GM406889139.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/free-robux-codes-free_GM431946152.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/free-robux-live_GM431946152.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/roblox-free-robux-website_GM431946152.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/minecraft-toys-for-free_GM479516143.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/synapse-x-roblox-free-download-2021_GM431946152.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/roblox-free-candy-van_GM431946152.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/is-it-okay-to-use-free-models-in-roblox_GM431946152.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/free-roblox-skin-codes_GM431946152.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/earn-free-robux-today_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_off00003019.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3019 22496 bytes
SHA-256: 70d1c7b15346c104a3b9b64d71f6b333bd131fa8541f345c5f364f51ca48e23c
font_01_sfnt_off00006249.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6249 19156 bytes
SHA-256: 488cf91c5852f61976a75c157190bc68970b6643a3b61c25d9d957a5e6cf376e

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