Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2b247e255f042da…

MALICIOUS

PDF

34.3 KB Created: 2021-07-09 04:18:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 5cc20a1b63cd2ef53a62b31f2d5c5479 SHA-1: 6439aed8b3d2aea560c478faac5368bca76bdf0f SHA-256: a2b247e255f042da3ddc4d161fab831476901a9c8096c0ab2f67abd773680274
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/479516143/how-can-you-get-minecraft-for-free-game-hack PDF link annotation
    • https://tanahlot.id/assets/CKImages/files/roblox-hoops-hack_GM431946152.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/free-chest-coin-master_GM406889139.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/how-to-get-free-robux-2021-mac_GM431946152.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/como-descargar-hacks-para-roblox-red-boy_GM431946152.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/how-do-you-get-free-robux-code_GM431946152.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/how-o-have-free-robux_GM431946152.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/free-gfx-roblox_GM431946152.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/como-banear-a-un-hacker-en-roblox_GM431946152.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/free-robux-websites-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/cheats-for-coin-master_GM406889139.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/hack-coin-master-without-verification_GM406889139.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/robux-matchcomfree-robux_GM431946152.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/coin-master-free-blogspot_GM406889139.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/how-to-get-any-shirts-for-free-on-roblox_GM431946152.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/coin-master-free-cards_GM406889139.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/mcpe-optifine_GM479516143.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/synapse-roblox-free-download_GM431946152.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/minecraft-free-download-2021_GM479516143.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/robux-promo-codes-free_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_off000030b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30B8 22500 bytes
SHA-256: 551aa511ffc49d30098c9327d26ed4d262f975d4d082914b170e60492d5211e1
font_01_sfnt_off000062c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62C6 18464 bytes
SHA-256: 8c0be28f95dea458027bca4435945abd711b328c8201bcef44ff76421a6436b2

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