Malicious PDF — malware analysis report

Static analysis result for SHA-256 5bcc87ada68bf793…

MALICIOUS

PDF

34.8 KB Created: 2021-06-30 11:52:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: b543c62c3f1473b59bfd699f77dc4796 SHA-1: 0f6014164eb17c6a7e8485c7ef2a36716ec22406 SHA-256: 5bcc87ada68bf7937f65df83323216b197328fa36a1a488c117dbec69ffc2dc2
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that redirect to sites offering 'free generators' or 'hacks' for popular games like Roblox and Minecraft. The ML classifier strongly indicated maliciousness, and the presence of these lures suggests the document is designed to trick users into visiting potentially harmful websites or downloading further malware. No scripts were extracted, but the overall pattern points to a phishing or malware distribution lure.

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.co/app/431946152/free-roblox-birthday-invitation-templates-game-hack PDF link annotation
    • http://perpustakaan.stikim.ac.id/slims/repository/code-roblox-for-account-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/free-daily-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/robux-generator_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/comment-avoir-un-dominus-aureus-free-ssur-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/roblox-rovive-free_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/minecraft-toys-for-free_GM479516143.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/free-minecraft-java-edition-codes_GM479516143.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/fishing-glitch-gives-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/is-free-robux-real_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/get-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/how-to-change-roblox-username-for-free-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/coin-master-free-coins-cheat_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/free-roblox-accounts-not-used_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/free-2021-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/roblox-fly-hack-november-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/roblox-build-a-boat-for-treasure-money-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/free-robux-generator-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/blogger-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/minecraft-free-download-iphone_GM479516143.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/coin-master-free-spins-link-2021-today_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_off00002fef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FEF 21904 bytes
SHA-256: dba15c4ad4a1af2b24874b147cadf124435baa1c5aca6b97934b762abcf5c51f
font_01_sfnt_off0000606d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x606D 19944 bytes
SHA-256: ca5806914e3843e179d331e08f29fe0bc84152e6028f1ae1c0ba7af719e875ba

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