Malicious PDF — malware analysis report

Static analysis result for SHA-256 48544d75e5bb9711…

MALICIOUS

PDF

47.9 KB Created: 2021-06-03 13:44:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 4e030593d4e07fb8c4fb2e68afead9aa SHA-1: 8f3340eadc1818a7a00fd88e4ac329479ec701e5 SHA-256: 48544d75e5bb9711889c1d2f5aae6ec9d02e0dbde04b04858ca0a7d0c95b680f
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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/479516143/how-to-get-free-minecraft-windows-10-game-hack PDF link annotation
    • https://perpustakaan.stami.ac.id//repository/getrobux-come_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id//repository/roblox-hack-game_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/free-robux-no-gift-card_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/2021-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/mobihack-net-roblox-hack_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id//repository/free-unlimited-coin-master-online-tool_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/coin-master-hack-no-human-verification-2021_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id//repository/roblox-arsenal-hack_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/roblox-studio-free-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/can-you-make-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/roblox-font-free_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/how-to-get-free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/coin-master-free-spin-links-december-30-2021_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id//repository/free-spin-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/coin-master-free-cards-link_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/what-is-wurst_GM479516143.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id//repository/how-to-get-free-robux-without-verification_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/coin-master-ad_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/how-to-get-free-roebucks-without-verification_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005335.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5335 26624 bytes
SHA-256: 46293603964853389f491ffc716c5fa0ff1602a8f5408f12445e7accf40ca1e5
font_01_sfnt_off00008dcd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DCD 2880 bytes
SHA-256: b053084cafd01c649462d87667ba56c569d6480ce60e7d20ae57ef6124cf178e
font_02_sfnt_off000097b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x97B8 18524 bytes
SHA-256: fe6ad3553d22b3ca012de373afe6f753a0e0722d907aa022396de61a87271ffc

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