Malicious PDF — malware analysis report

Static analysis result for SHA-256 df6a73f95d4435a8…

MALICIOUS

PDF

35.2 KB Created: 2021-06-27 21:58:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-22
MD5: c858b6c02f5f934c90360a0414317f2b SHA-1: b839b4eb92c2cb5603dfcb5c2dfa56fe25cc2d51 SHA-256: df6a73f95d4435a8315aefa3155a1ad9158175311620aa1e7d88821785ac3921
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/como-hackear-la-ropa-de-personas-en-roblox-game-hack PDF link annotation
    • https://promidiapropaganda.com.br/modules/default/fotos/uploads/files/hack-para-roblox-jailbreak-cheeskoo_GM431946152.pdfIn PDF document text
    • https://promidiapropaganda.com.br/modules/default/fotos/uploads/files/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://promidiapropaganda.com.br/modules/default/fotos/uploads/files/hack-coin-master-pc_GM406889139.pdfIn PDF document text
    • https://promidiapropaganda.com.br/modules/default/fotos/uploads/files/how-to-hack-rpg-world-roblox_GM431946152.pdfIn PDF document text
    • https://promidiapropaganda.com.br/modules/default/fotos/uploads/files/get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://promidiapropaganda.com.br/modules/default/fotos/uploads/files/roblox-lua-programming-book-pdf-free_GM431946152.pdfIn PDF document text
    • https://promidiapropaganda.com.br/modules/default/fotos/uploads/files/free-24-7-minecraft-server_GM479516143.pdfIn PDF document text
    • https://promidiapropaganda.com.br/modules/default/fotos/uploads/files/best-level-7-roblox-hacks-2021_GM431946152.pdfIn PDF document text
    • https://promidiapropaganda.com.br/modules/default/fotos/uploads/files/coin-master-free-spins-hack-but-no-surveys_GM406889139.pdfIn PDF document text
    • https://promidiapropaganda.com.br/modules/default/fotos/uploads/files/blogger-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://promidiapropaganda.com.br/modules/default/fotos/uploads/files/roblox-scam_GM431946152.pdfIn PDF document text
    • https://promidiapropaganda.com.br/modules/default/fotos/uploads/files/how-to-log-out-of-coin-master_GM406889139.pdfIn PDF document text
    • https://promidiapropaganda.com.br/modules/default/fotos/uploads/files/how-to-make-your-avatar-really-small-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://promidiapropaganda.com.br/modules/default/fotos/uploads/files/get-free-robux_GM431946152.pdfIn PDF document text
    • https://promidiapropaganda.com.br/modules/default/fotos/uploads/files/coin-master-hack-2021-free_GM406889139.pdfIn PDF document text
    • https://promidiapropaganda.com.br/modules/default/fotos/uploads/files/roblox-hax_GM431946152.pdfIn PDF document text
    • https://promidiapropaganda.com.br/modules/default/fotos/uploads/files/free-roblox-hack-us_GM431946152.pdfIn PDF document text
    • https://promidiapropaganda.com.br/modules/default/fotos/uploads/files/coin-master-free-spins-youthnow_GM406889139.pdfIn PDF document text
    • https://promidiapropaganda.com.br/modules/default/fotos/uploads/files/list-of-roblox-cheat-engines_GM431946152.pdfIn PDF document text
    • https://promidiapropaganda.com.br/modules/default/fotos/uploads/files/free-robux-download_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_off000031b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31B0 22436 bytes
SHA-256: 66e5bbb9e03e5a84244e621f0c67920045517a103e3105961a5bd68d69c9f423
font_01_sfnt_off000063b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63B7 19416 bytes
SHA-256: df4162a3c36a593d3a7afa6422963c900f2d99349bea7debf73063bbad323a6e