Malicious PDF — malware analysis report

Static analysis result for SHA-256 cfe82cb29f02cb49…

MALICIOUS

PDF

33.8 KB Created: 2021-07-07 19:39:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 004747e5b3fb07ed45fd05eb79a91455 SHA-1: 74094cf0fc0618460bad30aa99acd46d45235d9c SHA-256: cfe82cb29f02cb49a9e3a54d06273d2b2db13202525a84b869eec8e956d82f2d
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/431946152/hacks-para-roblox-game-hack PDF link annotation
    • https://hotelyetihome.com/userfiles/files/minecraft-pe-hacks_GM479516143.pdfIn PDF document text
    • https://hotelyetihome.com/userfiles/files/free-2021-roblox-codes_GM431946152.pdfIn PDF document text
    • https://hotelyetihome.com/userfiles/files/free-robux-generator-for-roblox-2021_GM431946152.pdfIn PDF document text
    • https://hotelyetihome.com/userfiles/files/hacks-for-coin-master-game_GM406889139.pdfIn PDF document text
    • https://hotelyetihome.com/userfiles/files/minecraft-windows-10-mod-menu_GM479516143.pdfIn PDF document text
    • https://hotelyetihome.com/userfiles/files/free-spins-and-coins-from-coin-master-game_GM406889139.pdfIn PDF document text
    • https://hotelyetihome.com/userfiles/files/free-vip-server-roblox_GM431946152.pdfIn PDF document text
    • https://hotelyetihome.com/userfiles/files/how-to-get-minecraft-for-free-on-iphone_GM479516143.pdfIn PDF document text
    • https://hotelyetihome.com/userfiles/files/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • https://hotelyetihome.com/userfiles/files/free-robux-today_GM431946152.pdfIn PDF document text
    • https://hotelyetihome.com/userfiles/files/coin-master-hack-ios-download_GM406889139.pdfIn PDF document text
    • https://hotelyetihome.com/userfiles/files/coin-master-free-spins-apple_GM406889139.pdfIn PDF document text
    • https://hotelyetihome.com/userfiles/files/free-robux-download_GM431946152.pdfIn PDF document text
    • https://hotelyetihome.com/userfiles/files/coinmasterfree_GM406889139.pdfIn PDF document text
    • https://hotelyetihome.com/userfiles/files/claim-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://hotelyetihome.com/userfiles/files/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
    • https://hotelyetihome.com/userfiles/files/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://hotelyetihome.com/userfiles/files/how-to-get-free-robux-inspect-no-waiting_GM431946152.pdfIn PDF document text
    • https://hotelyetihome.com/userfiles/files/free-robux-kid-friendly-no-human-verification_GM431946152.pdfIn PDF document text
    • https://hotelyetihome.com/userfiles/files/free-swoosh-hair-in-roblox_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_off00002eef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EEF 22688 bytes
SHA-256: db544a0a0af225d876865a05a39ec199420b19f6438ccf83c8d5b5e882cae997
font_01_sfnt_off00005fbc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FBC 18808 bytes
SHA-256: 18c04ed6d416389464b421298170c47648070a4b7ff5aa0adb6f039d676fa700

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