Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb7ed9ec07c06fe3…

MALICIOUS

PDF

43.9 KB Created: 2021-06-03 14:33:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 2fb560594b0ed5b2011d1098a4ca18db SHA-1: 229a7ee85c0a368703d69f7f96ed5ab5251b018e SHA-256: bb7ed9ec07c06fe34abc956daffddf10c2d8e525b75a9d686657c03e596f589f
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 0.9865

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/406889139/coin-master-hack-tool-v1-9-apk-game-hack PDF link annotation
    • https://perpustakaan.stieppi.ac.id/repository/can-i-get-robux-for-free_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stieppi.ac.id/repository/coin-master-hack-unlimited-spins-and-coins-cheats_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stieppi.ac.id/repository/free-spins-coin-master-links-blogspot_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stieppi.ac.id/repository/minecraft-114-4-download-free_GM479516143.pdfIn PDF document text
    • https://perpustakaan.stieppi.ac.id/repository/minecraft-free-download-android-apk_GM479516143.pdfIn PDF document text
    • https://perpustakaan.stieppi.ac.id/repository/how-to-hack-roblox-to-get-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stieppi.ac.id/repository/hack-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stieppi.ac.id/repository/master-coin-hack-apk_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stieppi.ac.id/repository/coin-master-free-stuff_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stieppi.ac.id/repository/coin-master-free-in-app-purchases_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stieppi.ac.id/repository/hack-xp-net-coin-master_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stieppi.ac.id/repository/free-roblox-toys_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stieppi.ac.id/repository/free-coins-for-flip-master-online_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stieppi.ac.id/repository/roblox-hack-download_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stieppi.ac.id/repository/coin-master-freebies_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stieppi.ac.id/repository/roblox-zone-free-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stieppi.ac.id/repository/coin-master-hack-spins-download_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stieppi.ac.id/repository/roblox-free-executor_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stieppi.ac.id/repository/free-minecraft-education-edition_GM479516143.pdfIn PDF document text
    • https://perpustakaan.stieppi.ac.id/repository/minecraft-hacks-115-2_GM479516143.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
stream_004_off00004f45.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F45 24904 bytes
SHA-256: 4a96aa6f9a94b2c609a2a4b442c4d5dcec027a83ca0871bee947ac408a535404
font_01_sfnt_off00008872.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8872 18368 bytes
SHA-256: f865939a9af2b291dea3e70cdd1104ac7269b105b0b8110a8e2b8e0726ed96db

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