Malicious PDF — malware analysis report

Static analysis result for SHA-256 0027bc5552d348d0…

MALICIOUS

PDF

33.6 KB Created: 2021-06-20 02:33:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 662d6166f6043ffc4beb5981c683a493 SHA-1: 205f6d8cf6c561d8a435f57649459becf337f01a SHA-256: 0027bc5552d348d04fef75fdac07d63b6b88246a1a2a48713e6c21f563637570
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/op-hacks-roblox-game-hack PDF link annotation
    • http://perpus.masda.ac.id/repository/microsoft-rewards-robux_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-clothes-promo-codes-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-roblox-money-generator_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/roblox-promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-coins-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-robux-app-2021_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/coin-master-app_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/coin-master-hack-game-download_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/roblox-theme-park-tycoon-2-cheat-codes_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/free-roblox-gear_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/pokemon-go-free-metagross_GM1094591345.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-cards_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/pastebin-hack-robux-free_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/roblox-codes-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/coin-master-reward-link_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/minecraft-client-download_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/https-pastebin-com-roblox-hack_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/no-scam-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/can-you-get-free-robux-on-cheat-enine_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
font_00_sfnt_off00002e38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E38 22152 bytes
SHA-256: 36457cd093dd77d8a73e2692b7ba0d98e80379d227c66403b88adc32b6ca5c72
font_01_sfnt_off00005edc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EDC 18832 bytes
SHA-256: 138a1b99d2fe8472a8b8fa6d129eb8e1d7814711e147838ddacd23eee5d75e04

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