Malicious PDF — malware analysis report

Static analysis result for SHA-256 15c892117100f884…

MALICIOUS

PDF

43.7 KB Created: 2021-05-16 21:08:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 6dbb8ebc1ce5b70bd55e9e42d37e152a SHA-1: 29ff9bc75c14fb03254b10696e0dd43aade4ea70 SHA-256: 15c892117100f884294333cc1c90015f282f821691535596ed61287e4207012d
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link T1534 Steal Session Token

The PDF document contains multiple links, including one explicitly flagged as a 'free generator / game hack' lure. The presence of a fake CAPTCHA and MFA lure suggests an attempt to trick users into providing credentials or session tokens. The document's content and linked URLs strongly indicate a phishing or credential harvesting campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

Heuristics 6

  • 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
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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.xyz/app/431946152/hey-google-how-do-you-get-free-robux-game-hack PDF link annotation
    • https://duoledesign.com/image/data/files/how-to-download-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://duoledesign.com/image/data/files/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • https://duoledesign.com/image/data/files/how-do-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://duoledesign.com/image/data/files/free-robux-no-human-verify_GM431946152.pdfIn PDF document text
    • https://duoledesign.com/image/data/files/kachifpro_GM406889139.pdfIn PDF document text
    • https://duoledesign.com/image/data/files/coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • https://duoledesign.com/image/data/files/is-minecraft-free-on-pc_GM479516143.pdfIn PDF document text
    • https://duoledesign.com/image/data/files/free-robux-sites-2021_GM431946152.pdfIn PDF document text
    • https://duoledesign.com/image/data/files/best-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://duoledesign.com/image/data/files/how-do-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://duoledesign.com/image/data/files/free-downloads-for-coin-master-daily-rewards_GM406889139.pdfIn PDF document text
    • https://duoledesign.com/image/data/files/how-to-hack-robux_GM431946152.pdfIn PDF document text
    • https://duoledesign.com/image/data/files/roblox-com-free-play_GM431946152.pdfIn PDF document text
    • https://duoledesign.com/image/data/files/coin-master-hack-mod-game-download_GM406889139.pdfIn PDF document text
    • https://duoledesign.com/image/data/files/free-robux-link_GM431946152.pdfIn PDF document text
    • https://duoledesign.com/image/data/files/minecraft-redeem-code-free_GM479516143.pdfIn PDF document text
    • https://duoledesign.com/image/data/files/minecraft-free-download-windows_GM479516143.pdfIn PDF document text
    • https://duoledesign.com/image/data/files/minecraft-iphone-free_GM479516143.pdfIn PDF document text
    • https://duoledesign.com/image/data/files/free-roblox-accounts-with-robux-that-work-not-banned_GM431946152.pdfIn PDF document text
    • https://duoledesign.com/image/data/files/haktuts-coin-master-today_GM406889139.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_off000047a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x47A6 27312 bytes
SHA-256: 059a2db878c1845de8cba674598c5a0272c68688e2475de79e4069785605e3f6
font_01_sfnt_off000085ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85AC 19156 bytes
SHA-256: 2eaf05fb5b81c851c34d40d7c07e26ddd9b324a9c4f95fd917841cb6815dc612

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