Malicious PDF — malware analysis report

Static analysis result for SHA-256 0dbd00369b4ac43c…

MALICIOUS

PDF

42.3 KB Created: 2021-05-11 06:05:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 03e51f4ff35f9e5194d0046459b93265 SHA-1: 2eed5c539bd25257fb31e568a66c715cf98ece11 SHA-256: 0dbd00369b4ac43ce034d7fd3a337a78041108aaabdf093532fc20c9aa19d12a
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 0.9971

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.xyz/app/431946152/free-robux-no-verification-no-survey-game-hack PDF link annotation
    • https://enpav.it/images/coin-master-free-spins-app_GM406889139.pdfIn PDF document text
    • https://enpav.it/images/hacks-for-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • https://enpav.it/images/rblx-city-free-robux_GM431946152.pdfIn PDF document text
    • https://enpav.it/images/hackear-juego-coin-master_GM406889139.pdfIn PDF document text
    • https://enpav.it/images/coin-master-mod-version-free-download_GM406889139.pdfIn PDF document text
    • https://enpav.it/images/robux-hack-generator_GM431946152.pdfIn PDF document text
    • https://enpav.it/images/minecraft-for-free-on-phone_GM479516143.pdfIn PDF document text
    • https://enpav.it/images/coin-master-free-coins-and-spins-app_GM406889139.pdfIn PDF document text
    • https://enpav.it/images/robux-only_GM431946152.pdfIn PDF document text
    • https://enpav.it/images/how-to-get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • https://enpav.it/images/rbx-place-free-robux_GM431946152.pdfIn PDF document text
    • https://enpav.it/images/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://enpav.it/images/how-to-get-free-roebucks_GM431946152.pdfIn PDF document text
    • https://enpav.it/images/roblox-hack-game_GM431946152.pdfIn PDF document text
    • https://enpav.it/images/coin-master-free-spins-link-blogspot-2021_GM406889139.pdfIn PDF document text
    • https://enpav.it/images/free-robux-only-username-no-human-verification_GM431946152.pdfIn PDF document text
    • https://enpav.it/images/roblox-help-free-robux_GM431946152.pdfIn PDF document text
    • https://enpav.it/images/how-can-you-get-free-robux_GM431946152.pdfIn PDF document text
    • https://enpav.it/images/how-to-get-free-chest-in-coin-master_GM406889139.pdfIn PDF document text
    • https://enpav.it/images/free-robux-group_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_off000047fb.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47FB 24640 bytes
SHA-256: c6cbe95a217426350047f7d7252c55e5a2b5468d5ca9ce75eacdb55c4c022d4a
font_01_sfnt_off000080e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80E4 18892 bytes
SHA-256: 71091a6cc5ee2467f7d55b23aad8276d14a961c51a29e0f15aa3bcc69cbd56da

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