Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f79b80a23daeeb6…

MALICIOUS

PDF

44.9 KB Created: 2021-06-03 22:33:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 3550c0865af3f4eec1ef1e956b4597cc SHA-1: bfe498cf9797ac974d996872b4bd2fa494c85268 SHA-256: 8f79b80a23daeeb629e38fd16adf7b7008443760f8978ffb2df0a4d95f245601
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a high-confidence heuristic indicating it links to a 'free generator / game hack' lure. The embedded URL, https://netcdn.online/app/431946152/www-bandicam-com-free-robux-game-hack, likely serves as a redirector to a malicious site or download. While no scripts were explicitly extracted, the PDF structure and embedded links suggest a social engineering tactic to trick users into visiting a potentially harmful resource.

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.online/app/431946152/www-bandicam-com-free-robux-game-hack PDF link annotation
    • http://perpustakaan.smkn1pbg.sch.id/repository/can-you-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • http://perpustakaan.smkn1pbg.sch.id/repository/free-robux-giveaway_GM431946152.pdfIn PDF document text
    • http://perpustakaan.smkn1pbg.sch.id/repository/get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://perpustakaan.smkn1pbg.sch.id/repository/free-2021-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.smkn1pbg.sch.id/repository/coin-master-free-spins-today-new_GM406889139.pdfIn PDF document text
    • http://perpustakaan.smkn1pbg.sch.id/repository/coin-master-update-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.smkn1pbg.sch.id/repository/free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.smkn1pbg.sch.id/repository/coin-master-free-coins-and-spins-link_GM406889139.pdfIn PDF document text
    • http://perpustakaan.smkn1pbg.sch.id/repository/daily-free-spin-coin-master-link_GM406889139.pdfIn PDF document text
    • http://perpustakaan.smkn1pbg.sch.id/repository/tiktok-free-blue-tick_GM835599320.pdfIn PDF document text
    • http://perpustakaan.smkn1pbg.sch.id/repository/coin-master-lucky-patcher-hack_GM406889139.pdfIn PDF document text
    • http://perpustakaan.smkn1pbg.sch.id/repository/free-minecraft-maps-pe_GM479516143.pdfIn PDF document text
    • http://perpustakaan.smkn1pbg.sch.id/repository/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.smkn1pbg.sch.id/repository/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.smkn1pbg.sch.id/repository/roblox-meep-city-game-free-download_GM431946152.pdfIn PDF document text
    • http://perpustakaan.smkn1pbg.sch.id/repository/is-minecraft-bedrock-edition-free_GM479516143.pdfIn PDF document text
    • http://perpustakaan.smkn1pbg.sch.id/repository/free-robux-no-email_GM431946152.pdfIn PDF document text
    • http://perpustakaan.smkn1pbg.sch.id/repository/freerobuxhack-us_GM431946152.pdfIn PDF document text
    • http://perpustakaan.smkn1pbg.sch.id/repository/coin-master-free-bonus_GM406889139.pdfIn PDF document text
    • http://perpustakaan.smkn1pbg.sch.id/repository/roblox-executor-free-download_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_off000051f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x51F6 24712 bytes
SHA-256: 5b0064524c486a9996d7043b033f9792328a0c2d9e8fda959beb7995fa6b3a89
font_01_sfnt_off00008a81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A81 19156 bytes
SHA-256: 046fece166e0c344053b4db6f28898a504184055d343b56560be82d41958fbf7

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