Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce5085d797eb74cd…

MALICIOUS

PDF

44.0 KB Created: 2021-06-03 08:58:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 5abb7026f8781cbe2f5307ffe210dc6b SHA-1: 17c512f863ccdac39cfedb9763e5647628a43f35 SHA-256: ce5085d797eb74cde2da18014d789a10591d024c81bb78f9970b298afc450e2f
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

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/moonactive-coin-master-free-spins-game-hack PDF link annotation
    • https://bwsrubber.com/image/data/files/free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/how-to-get-free-robux-no-survey_GM431946152.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/free-spin-link-of-coin-master_GM406889139.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/free-robux-hack-generator_GM431946152.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/free-2021-roblox-accounts_GM431946152.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/juego-hackeado-de-coin-master_GM406889139.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/free-coins-coin-master_GM406889139.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/wurst-112-2_GM479516143.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/coin-master-free-coins-and-spins-blogspot_GM406889139.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/coin-master-free-spin-link-twitter_GM406889139.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/cm-daily-spins_GM406889139.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/free-spin-coin-master-today_GM406889139.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/how-to-o-get-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/coin-master-hack-program_GM406889139.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/wizard-hacks_GM479516143.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/get-free-spins-coin-master-link_GM406889139.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/free-robux-mobile_GM431946152.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/free-400-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/roblox-piano-hack_GM431946152.pdfIn PDF document text
    • https://www.urcouponsdeal.com/2019/03/coin-master-free-spin-and-coin-links.htmlIn 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_off000052ea.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x52EA 24192 bytes
SHA-256: 995e1aeafdf25b8ea75ea999c6c2bb33e37037b050a64aa8ce9eb9436acf4f1c
font_01_sfnt_off00008a38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A38 18000 bytes
SHA-256: 607e24879c86e77aea2ecea8189ce1ac53cb07a44b728ea7b5016cea096443a5

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