Malicious PDF — malware analysis report

Static analysis result for SHA-256 07d2fac4f0637294…

MALICIOUS

PDF

33.3 KB Created: 2021-06-29 20:56:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: d71639ed8763fca088be674ef401c7cd SHA-1: 9debd93bb4005ff8f18fede15bfc948ba1d67fb1 SHA-256: 07d2fac4f0637294821cdfa565c52b111806e967d59edc597087fcb2a95be982
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links to external websites, primarily offering 'free Robux' or game hacks, indicating a social engineering lure. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' strongly suggests these links lead to malicious or scam content. While no scripts were explicitly extracted, the nature of the lures and the embedded URLs point towards a phishing or scam campaign, likely initiated via a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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.co/app/431946152/how-to-get-free-robux-codes-2021-game-hack PDF link annotation
    • http://www.repion.com/uploaded_files/userfiles/files/bloxpage-free-robux_GM431946152.pdfIn PDF document text
    • http://www.repion.com/uploaded_files/userfiles/files/coin-master-hack-apk-35-13_GM406889139.pdfIn PDF document text
    • http://www.repion.com/uploaded_files/userfiles/files/ideos-de-thanos-en-roblox-como-perfil-free_GM431946152.pdfIn PDF document text
    • http://www.repion.com/uploaded_files/userfiles/files/coin-master-hack-twitter_GM406889139.pdfIn PDF document text
    • http://www.repion.com/uploaded_files/userfiles/files/microsoft-rewards-roblox_GM431946152.pdfIn PDF document text
    • http://www.repion.com/uploaded_files/userfiles/files/how-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.repion.com/uploaded_files/userfiles/files/hack-para-tener-robux-en-roblox-2021_GM431946152.pdfIn PDF document text
    • http://www.repion.com/uploaded_files/userfiles/files/how-long-are-you-banned-from-roblox-if-you-hack_GM431946152.pdfIn PDF document text
    • http://www.repion.com/uploaded_files/userfiles/files/how-to-get-free-robux-with-bloxawards_GM431946152.pdfIn PDF document text
    • http://www.repion.com/uploaded_files/userfiles/files/coin-master-free-spins-daily-2021_GM406889139.pdfIn PDF document text
    • http://www.repion.com/uploaded_files/userfiles/files/how-can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.repion.com/uploaded_files/userfiles/files/roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://www.repion.com/uploaded_files/userfiles/files/minecraft-free-download-no-virus-and-free-robux_GM431946152.pdfIn PDF document text
    • http://www.repion.com/uploaded_files/userfiles/files/minecraft-free-download-chromebook_GM479516143.pdfIn PDF document text
    • http://www.repion.com/uploaded_files/userfiles/files/robux-claimer_GM431946152.pdfIn PDF document text
    • http://www.repion.com/uploaded_files/userfiles/files/daniel-neward-youtube-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://www.repion.com/uploaded_files/userfiles/files/bux-life-robux-free_GM431946152.pdfIn PDF document text
    • http://www.repion.com/uploaded_files/userfiles/files/hack-a-game_GM431946152.pdfIn PDF document text
    • http://www.repion.com/uploaded_files/userfiles/files/worst-roblox-avatars_GM431946152.pdfIn PDF document text
    • http://www.repion.com/uploaded_files/userfiles/files/how-to-get-free-robux-hack_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_off00002b4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2B4D 21916 bytes
SHA-256: 139604e060bd7581e940920d9cda376c38e906dfe514249c5dacaccbdb9e7c4d
font_01_sfnt_off00005ba4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BA4 19560 bytes
SHA-256: 23fd6b1887025421e6e39521b650ee02de163ea1ebb303fc14ef8bd616b7f3d5

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