Malicious PDF — malware analysis report

Static analysis result for SHA-256 64be3bca9108a0b6…

MALICIOUS

PDF

44.4 KB Created: 2021-06-14 01:33:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 463970878dc5f1defb3df15cc8ba80f2 SHA-1: ab217e30a6a282615a9e5ee950ea1be0e35dfaa7 SHA-256: 64be3bca9108a0b6f448fa20e6b37b378512f1ebdba4079d0c63e30a8b562a8e
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 0.9980

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/roblox-metal-detector-simulator-infinite-money-hack-game-hack PDF link annotation
    • http://lib.untad.ac.id//repository/earn-free-robux-today_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/games-that-can-be-hacked_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/how-to-hack-roblox-accounts-2021-easy_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/coin-master-daily-free-link_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/free-minecraft-pe-server_GM479516143.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/rbx-hut-promo-codes_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/how-to-get-free-robux-no-hack-on-ipad_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/coin-master-ios-hack_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/free-robux-place_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/robux-premium_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/free-coin-master-s_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/coin-master-apk-hacked-3526_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/roblox-hacks-pc-2021_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/free-robux-no-verification-no-download_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/coin-master-village-3_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/reddit-roblox-lumber-tycoon-2-money-hack_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/coin-master-card-hack_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/roblox-hack-unlimited-money-pc_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/bananaman2021-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/roblox-free-accessories_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
stream_003_off0000488f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x488F 28300 bytes
SHA-256: edbb4a251bdf105ddfa1c5efe25db814c27fe3683600ad5240fbf1e4a1fc3bf1
font_01_sfnt_off00008784.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8784 19536 bytes
SHA-256: ed71ea74d2186e490d25fd29e04c0459752c6d1d2cc9c754c0c9c104cc41b13e

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