Malicious PDF — malware analysis report

Static analysis result for SHA-256 df2b42839276d4e8…

MALICIOUS

PDF

34.4 KB Created: 2021-07-06 04:53:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 73a651cd2039eb401affaba98ba5fe1d SHA-1: 176255f6dd8766003c24be3583da60f8eb94793c SHA-256: df2b42839276d4e8864520823e1fe3f4a9e65ed865d6f84cb1ad19e5223f745c
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/minecraft-images-free-game-hack PDF link annotation
    • http://perpustakaan.urindo.ac.id/repository/how-can-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://perpustakaan.urindo.ac.id/repository/minecraft-pocket-edition-mods-for-free_GM479516143.pdfIn PDF document text
    • https://perpustakaan.urindo.ac.id/repository/tiktok-free-6-months_GM835599320.pdfIn PDF document text
    • https://perpustakaan.urindo.ac.id/repository/free-draw-roblox-kicked-error-247_GM431946152.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/coin-master-hack_GM406889139.pdfIn PDF document text
    • https://perpustakaan.urindo.ac.id/repository/free-robux-group_GM431946152.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/how-to-get-free-robux-in-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/descargar-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://perpustakaan.urindo.ac.id/repository/free-robux-no-verification-2021-ios_GM431946152.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/coin-master-hack-without-verification-code_GM406889139.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/earn-free-robux-today_GM431946152.pdfIn PDF document text
    • https://perpustakaan.urindo.ac.id/repository/free-1b-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.urindo.ac.id/repository/unlimited-roblox-hack-script_GM431946152.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/how-to-get-free-robux-games_GM431946152.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/roblox-free-robux-com_GM431946152.pdfIn PDF document text
    • https://perpustakaan.urindo.ac.id/repository/royal-high-school-roblox-how-to-get-free-money_GM431946152.pdfIn PDF document text
    • https://perpustakaan.urindo.ac.id/repository/hacks-para-tener-robux-gratis-2021_GM431946152.pdfIn PDF document text
    • https://perpustakaan.urindo.ac.id/repository/free-tiktok-comments_GM835599320.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/how-to-get-free-robux-on-iphone_GM431946152.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/free-robux-com_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_off0000313c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x313C 22836 bytes
SHA-256: 4f066fa238d830ecc0310c4a488bcf6b33596d861c8bbaf867bdee003aeab084
font_01_sfnt_off00006458.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6458 18116 bytes
SHA-256: 76604dd5740139514d3fd46c2a9d9c838f52c59b348f00b4ee9f07d20b77a693

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