Malicious PDF — malware analysis report

Static analysis result for SHA-256 c547b720495c49bc…

MALICIOUS

PDF

34.9 KB Created: 2021-06-26 18:16:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 2e74f653aa78b6980fc9d93d8073ed67 SHA-1: bcb3dc92ba2335f0d57253ae67b3bfa6b096a74e SHA-256: c547b720495c49bcf59c9c78ce161470a251792e10130cc9276fb1927e518981
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains multiple links and text referencing 'Robux Hack' and 'game hack' lures, indicating an attempt to trick users into visiting malicious websites. The ML classifier strongly flagged this PDF as malicious. The primary IOC is the redirector URL found in the document body and heuristics.

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/robux-hack-no-app-download-game-hack PDF link annotation
    • http://perpustakaan.ipts.ac.id/repository/how-to-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/coin-monster_GM406889139.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/how-to-get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/roblox-hack-client_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/how-to-change-roblox-username-for-free_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/roblox-how-to-get-free-robux-proof_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/best-free-robux-sites_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/outfits-roblox-free_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/glitches-for-free-hair-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/coin-master-unlimited-coins-hack-apk-download_GM406889139.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/coin-master-hack-https-coinms-net_GM406889139.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/roblox-hack-2021-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/how-to-get-free-gold-cards-on-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/free-roblox-hack-us_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/free-minecraft-hosting-24-7_GM479516143.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/how-to-pubg-uc-free_GM1330123889.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/xyz-hack-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/free-egg-roblox-eggcellent_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/girl-roblox-avatar_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002da6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DA6 23248 bytes
SHA-256: c50af7ffb074cc8fe563606b5974bc233a8a03243bd5365957086515837c6f0d
font_01_sfnt_off0000620b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x620B 19476 bytes
SHA-256: 272211e2a420deae85763c8c50e322bb21ec0c0ce9c57d8c3606679abe4be64c

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