Malicious PDF — malware analysis report

Static analysis result for SHA-256 40beba4828344436…

MALICIOUS

PDF

34.8 KB Created: 2021-07-06 08:02:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 3ea76b4e7549db49af33935170ac076f SHA-1: 43521f7e8397ffc4795dd5e9ba3467b69f974612 SHA-256: 40beba4828344436ec841f4cbbaf08a47471863ea6eaf3533e62c75ddb4029d6
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple embedded links, including one pointing to 'roblox-hack-me-robux-game-hack'. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' strongly suggests this is a lure to trick users into visiting a potentially malicious site. No scripts were extracted, but the presence of numerous game-related lures indicates a social engineering tactic to drive traffic to external resources.

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/roblox-hack-me-robux-game-hack PDF link annotation
    • https://elearning.manurululum.web.id/__statics/gudangsoal/files/free-robux-no-verification-no-survey_GM431946152.pdfIn PDF document text
    • https://elearning.manurululum.web.id/__statics/gudangsoal/files/free-links-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.manurululum.web.id/__statics/gudangsoal/files/roblox-using-cheat-engine_GM431946152.pdfIn PDF document text
    • https://elearning.manurululum.web.id/__statics/gudangsoal/files/how-to-download-minecraft-for-free-on-android_GM479516143.pdfIn PDF document text
    • https://elearning.manurululum.web.id/__statics/gudangsoal/files/free-robux-sirws_GM431946152.pdfIn PDF document text
    • https://elearning.manurululum.web.id/__statics/gudangsoal/files/coin-master-free-spins-ios-2021_GM406889139.pdfIn PDF document text
    • https://elearning.manurululum.web.id/__statics/gudangsoal/files/how-do-you-get-robux-on-roblox-for-free-2021_GM431946152.pdfIn PDF document text
    • https://elearning.manurululum.web.id/__statics/gudangsoal/files/how-do-i-get-robux_GM431946152.pdfIn PDF document text
    • https://elearning.manurululum.web.id/__statics/gudangsoal/files/roblox-hack-cleant-jailbraik_GM431946152.pdfIn PDF document text
    • https://elearning.manurululum.web.id/__statics/gudangsoal/files/obby-gives-you-10k-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.manurululum.web.id/__statics/gudangsoal/files/play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://elearning.manurululum.web.id/__statics/gudangsoal/files/coin-master-hack-2021-free_GM406889139.pdfIn PDF document text
    • https://elearning.manurululum.web.id/__statics/gudangsoal/files/how-can-you-get-robux_GM431946152.pdfIn PDF document text
    • https://elearning.manurululum.web.id/__statics/gudangsoal/files/minecraft-free-no-virus_GM479516143.pdfIn PDF document text
    • https://elearning.manurululum.web.id/__statics/gudangsoal/files/roblox-hacked-download-apk_GM431946152.pdfIn PDF document text
    • https://elearning.manurululum.web.id/__statics/gudangsoal/files/free-minecraft-generator_GM479516143.pdfIn PDF document text
    • https://elearning.manurululum.web.id/__statics/gudangsoal/files/coin-master-free-spins-link-march-2021_GM406889139.pdfIn PDF document text
    • https://elearning.manurululum.web.id/__statics/gudangsoal/files/boxing-simulator-roblox-hack_GM431946152.pdfIn PDF document text
    • https://elearning.manurululum.web.id/__statics/gudangsoal/files/how-to-get-robux_GM431946152.pdfIn PDF document text
    • https://elearning.manurululum.web.id/__statics/gudangsoal/files/coin-master-latest-mod-apk-free-download_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
font_00_sfnt_off000032b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32B2 21996 bytes
SHA-256: 5e91c70a4ebde146ee01564dac4cdb7f123a039dbc5bbe3b8dc4cc13a18d5886
font_01_sfnt_off00006352.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6352 18992 bytes
SHA-256: 86b86f91b54ee921683d76bd91845474e74a2f02ddd9d950759e972449d3ecfc

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