Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a1beb9544ee7ad2…

MALICIOUS

PDF

45.1 KB Created: 2021-06-07 19:53:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 87b672eeee4b64ae8f7702741c879942 SHA-1: aa230d98a927d52c3d570b4ea44705e50470d1d3 SHA-256: 0a1beb9544ee7ad2870a12bf224e836fbf247f78964f31fcecbccecedff65770
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 0.9865

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 https://netcdn.tw/app/431946152/roblox-free-cookies-game-hack PDF link annotation
    • https://miraller.com/upload/files/can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • https://miraller.com/upload/files/coin-master-free-spins-hack-download_GM406889139.pdfIn PDF document text
    • https://miraller.com/upload/files/how-to-get-free-robux-app_GM431946152.pdfIn PDF document text
    • https://miraller.com/upload/files/coin-master-generator-hack_GM406889139.pdfIn PDF document text
    • https://miraller.com/upload/files/robux-download_GM431946152.pdfIn PDF document text
    • https://miraller.com/upload/files/minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • https://miraller.com/upload/files/free-tiktok-followers-royal-key_GM835599320.pdfIn PDF document text
    • https://miraller.com/upload/files/coin-master-free-spin-link-today-2021_GM406889139.pdfIn PDF document text
    • https://miraller.com/upload/files/how-long-is-the-minecraft-free-trial_GM479516143.pdfIn PDF document text
    • https://miraller.com/upload/files/roblox-t-shirt-free_GM431946152.pdfIn PDF document text
    • https://miraller.com/upload/files/roblox-mobile-hack_GM431946152.pdfIn PDF document text
    • https://miraller.com/upload/files/how-to-get-coin-master-free-spins-in-email_GM406889139.pdfIn PDF document text
    • https://miraller.com/upload/files/roblox-hack-ga_GM431946152.pdfIn PDF document text
    • https://miraller.com/upload/files/apps-for-free-robux_GM431946152.pdfIn PDF document text
    • https://miraller.com/upload/files/coins-master_GM406889139.pdfIn PDF document text
    • https://miraller.com/upload/files/roblox-studio-free-download_GM431946152.pdfIn PDF document text
    • https://miraller.com/upload/files/coin-master-daily-free-spins-link-today-2021_GM406889139.pdfIn PDF document text
    • https://miraller.com/upload/files/coin-master-hack-2021-without-verification_GM406889139.pdfIn PDF document text
    • https://miraller.com/upload/files/robux-hack-me_GM431946152.pdfIn PDF document text
    • https://miraller.com/upload/files/roblox-hacked-version_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
stream_004_off00005297.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5297 25624 bytes
SHA-256: 4630054b045f46872c69679b291dc0bb4c6a2054c8244d37b752a649d43b5000
font_01_sfnt_off00008e14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E14 18236 bytes
SHA-256: e80719ee2dde87fb71690f288ea5dcf8fa8b8d9c48b911c93950c32a5d976a7b

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