Malicious PDF — malware analysis report

Static analysis result for SHA-256 425eb34332bf93d9…

MALICIOUS

PDF

44.7 KB Created: 2021-06-03 08:24:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: e3ed3ab8c815013f94733859b12c5e59 SHA-1: 5564ee3d0a51fcb4d2f7919d91930a595b2bc1f2 SHA-256: 425eb34332bf93d94be6e836827f075e3bf85e976633cad6bc73edd8c6f20647
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. It uses a fake-CAPTCHA lure. 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 0.9865

Heuristics 5

  • 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.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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 https://netcdn.online/app/431946152/roblox-free-printables-game-hack PDF link annotation
    • https://promidiapropaganda.com.br/modules/default/fotos/uploads/files/op-rewards-robux_GM431946152.pdfIn PDF document text
    • https://promidiapropaganda.com.br/modules/default/fotos/uploads/files/free-spins-coin-master-links-blogspot_GM406889139.pdfIn PDF document text
    • https://promidiapropaganda.com.br/modules/default/fotos/uploads/files/get-free-robux-today_GM431946152.pdfIn PDF document text
    • https://promidiapropaganda.com.br/modules/default/fotos/uploads/files/pubg-uc-unlimited-free_GM1330123889.pdfIn PDF document text
    • https://promidiapropaganda.com.br/modules/default/fotos/uploads/files/how-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://promidiapropaganda.com.br/modules/default/fotos/uploads/files/coin-master-hack-for-ios_GM406889139.pdfIn PDF document text
    • https://promidiapropaganda.com.br/modules/default/fotos/uploads/files/coin-master-golden-cards-hack_GM406889139.pdfIn PDF document text
    • https://promidiapropaganda.com.br/modules/default/fotos/uploads/files/appsmobinfo-coinmasterhack-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://promidiapropaganda.com.br/modules/default/fotos/uploads/files/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • https://promidiapropaganda.com.br/modules/default/fotos/uploads/files/easy-robux-hack_GM431946152.pdfIn PDF document text
    • https://promidiapropaganda.com.br/modules/default/fotos/uploads/files/mosttechs-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://promidiapropaganda.com.br/modules/default/fotos/uploads/files/coin-master-free-spins-link-blogspot-2021_GM406889139.pdfIn PDF document text
    • https://promidiapropaganda.com.br/modules/default/fotos/uploads/files/free-roblox-accounts-dantdm_GM431946152.pdfIn PDF document text
    • https://promidiapropaganda.com.br/modules/default/fotos/uploads/files/hacks-for-coin-master-game_GM406889139.pdfIn PDF document text
    • https://promidiapropaganda.com.br/modules/default/fotos/uploads/files/apps-for-free-robux_GM431946152.pdfIn PDF document text
    • https://promidiapropaganda.com.br/modules/default/fotos/uploads/files/make-robux_GM431946152.pdfIn PDF document text
    • https://promidiapropaganda.com.br/modules/default/fotos/uploads/files/free-roblox-gift-card-codes-2021_GM431946152.pdfIn PDF document text
    • https://promidiapropaganda.com.br/modules/default/fotos/uploads/files/how-to-get-free-robux-no-survey_GM431946152.pdfIn PDF document text
    • https://promidiapropaganda.com.br/modules/default/fotos/uploads/files/tiktok-free-gift_GM835599320.pdfIn PDF document text
    • https://promidiapropaganda.com.br/modules/default/fotos/uploads/files/free-robux-only-1-step_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000053ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x53EC 24648 bytes
SHA-256: c3869345280ba9fa068e2ba32a1d4d4d6fd8966b858c26cf0cd67396e0741996
font_01_sfnt_off00008b45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B45 18552 bytes
SHA-256: b7813c1cf5855ff7333da4fa1e106f27e1bbe272df09c79a879bc8b995579971

Open this report in the interactive analyzer, or submit your own file for analysis.