Malicious PDF — malware analysis report

Static analysis result for SHA-256 788a0748de20026d…

MALICIOUS

PDF

46.9 KB Created: 2021-06-03 08:11:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 86c07eebd208aeb24c4c84ea5f8b1ac3 SHA-1: e43714abdd41fdfbb3a8ad4e81d91f7307317bff SHA-256: 788a0748de20026df3553db8221c02bafa21b5da7864ed0bf5f58054d5ef7efb
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document employs a common lure of 'game hacks' and 'free generators' to entice users. It contains multiple embedded URLs, including one pointing to 'easy-robux-today-com-game-hack', which is highly indicative of a scam or phishing attempt. The ML classifier also flagged this PDF as malicious with high confidence. No scripts were extracted, but the document's structure and embedded links suggest it is designed to redirect users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

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.online/app/431946152/easy-robux-today-com-game-hack PDF link annotation
    • https://financia-business-school.com/static/upload/files/all-free-items-in-roblox_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/how-to-get-minecraft-for-free-on-android_GM479516143.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/coin-master-game-hack-online_GM406889139.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/coin-master-32-mod-hack-apk-download_GM406889139.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/clean-master-free-coins-and-spins_GM406889139.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/free-robux-without-survey_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/is-it-possible-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/coin-master-hack-apk_GM406889139.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/minecraft-java-code-free_GM479516143.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/coin-master-links-to-get-free-spins_GM406889139.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/youtube-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/free-roblox-accounts-with-robux-that-work-not-banned_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/coin-master-card-collection-hack_GM406889139.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/coin-master-how-to-get-japan-sushi-card-free_GM406889139.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/coinmasterdailyfreespins-com_GM406889139.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/roblox-www-com_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/robux-game-com_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/how-to-get-free-robux-with-no-verification_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/how-to-hack-coin-master-ios-no-jailbreak_GM406889139.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_off000056f7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x56F7 25876 bytes
SHA-256: ae1e63f88fb8c96a2ab95e2535e6e40c5be319396fc433493c2c5003ba9a603c
font_01_sfnt_off00009371.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9371 18692 bytes
SHA-256: 73d558874ba1f93a48afe8e813aec995f67c91820d85dfc512325dae3e965bb9

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