Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e0b91298268383b…

MALICIOUS

PDF

34.3 KB Created: 2021-07-03 13:17:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: a62de402d612ecb82196902029c4008a SHA-1: 06942b25ab3519bd85f72cb72da0f83fbdb2deeb SHA-256: 7e0b91298268383b38862e06e71ee89fa1845e4d24fa26345ef4fcf86739931f
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/406889139/coin-master-hacker-club-game-hack PDF link annotation
    • https://au-ma.com/image/data/files/free-minecraft-hosting_GM479516143.pdfIn PDF document text
    • https://au-ma.com/image/data/files/roblox36com-free-robux_GM431946152.pdfIn PDF document text
    • https://au-ma.com/image/data/files/free-robux-for-kids-no-verification_GM431946152.pdfIn PDF document text
    • https://au-ma.com/image/data/files/how-to-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • https://au-ma.com/image/data/files/free-spin-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://au-ma.com/image/data/files/coin-master-hack-without-verification-site-zyngaplayerforumscom_GM406889139.pdfIn PDF document text
    • https://au-ma.com/image/data/files/how-can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • https://au-ma.com/image/data/files/free-robux-zephplayz_GM431946152.pdfIn PDF document text
    • https://au-ma.com/image/data/files/claimrbx-free-robux_GM431946152.pdfIn PDF document text
    • https://au-ma.com/image/data/files/coin-master-free-spins-link-today_GM406889139.pdfIn PDF document text
    • https://au-ma.com/image/data/files/free-daily-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://au-ma.com/image/data/files/free-roblox-item-2021_GM431946152.pdfIn PDF document text
    • https://au-ma.com/image/data/files/free-unlimited-robux-hack-working-2021_GM431946152.pdfIn PDF document text
    • https://au-ma.com/image/data/files/how-to-get-10-000-free-robux_GM431946152.pdfIn PDF document text
    • https://au-ma.com/image/data/files/get-robux_GM431946152.pdfIn PDF document text
    • https://au-ma.com/image/data/files/how-to-hack-someone-on-roblox_GM431946152.pdfIn PDF document text
    • https://au-ma.com/image/data/files/naruto-new-generations-roblox-hack_GM431946152.pdfIn PDF document text
    • https://au-ma.com/image/data/files/free-minecraft-for-kids_GM479516143.pdfIn PDF document text
    • https://au-ma.com/image/data/files/real-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://au-ma.com/image/data/files/hacks-for-minecraft-bedrock_GM479516143.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_off0000301b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x301B 22760 bytes
SHA-256: 1e0647541647d31cc0ef87a48a9aa9a6ea14e4ce59e48e3962b0928c844b830e
font_01_sfnt_off000062e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62E8 18376 bytes
SHA-256: dd43411f80a60a82ab72e2bc8e086b2bb22e047feb8d2d035d108791568e8130

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