Malicious PDF — malware analysis report

Static analysis result for SHA-256 be85d7e7a85d2499…

MALICIOUS

PDF

43.2 KB Created: 2021-05-16 09:24:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 5a57e58863a771ad0abeaf83853e6294 SHA-1: c92d9c3af7e0012dcdd840231724ff86b82ee23a SHA-256: be85d7e7a85d2499520956c49438f2073c9df9f964f13f130547c25bfc352e86
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains multiple links, including one prominently advertised as a 'free generator / game hack' for Minecraft. This lure, combined with the visual cue of a download button, strongly suggests a social engineering attempt to trick the user into visiting a malicious URL. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/479516143/how-to-install-minecraft-for-free-game-hack PDF link annotation
    • https://consorziocsa-asicaivano.it/images/roblox-avatar-com_GM431946152.pdfIn PDF document text
    • https://consorziocsa-asicaivano.it/images/how-to-get-a-refund-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://consorziocsa-asicaivano.it/images/free-robux-link_GM431946152.pdfIn PDF document text
    • https://consorziocsa-asicaivano.it/images/free-robux-offers_GM431946152.pdfIn PDF document text
    • https://consorziocsa-asicaivano.it/images/daily-spin-coin-master-free_GM406889139.pdfIn PDF document text
    • https://consorziocsa-asicaivano.it/images/how-to-get-minecraft-windows-10-for-free-2021_GM479516143.pdfIn PDF document text
    • https://consorziocsa-asicaivano.it/images/minecraft-bedrock-client_GM479516143.pdfIn PDF document text
    • https://consorziocsa-asicaivano.it/images/coin-master-hack-pro_GM406889139.pdfIn PDF document text
    • https://consorziocsa-asicaivano.it/images/how-do-you-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://consorziocsa-asicaivano.it/images/free-spins-coin-master-without-survey_GM406889139.pdfIn PDF document text
    • https://consorziocsa-asicaivano.it/images/minecraft-pe-hacked-client-download_GM479516143.pdfIn PDF document text
    • https://consorziocsa-asicaivano.it/images/how-to-get-free-shirts-on-roblox_GM431946152.pdfIn PDF document text
    • https://consorziocsa-asicaivano.it/images/coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • https://consorziocsa-asicaivano.it/images/microsoft-bing-free-robux_GM431946152.pdfIn PDF document text
    • https://consorziocsa-asicaivano.it/images/coin-master-codes_GM406889139.pdfIn PDF document text
    • https://consorziocsa-asicaivano.it/images/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://consorziocsa-asicaivano.it/images/how-to-get-free-coins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://consorziocsa-asicaivano.it/images/arsenal-hacks-roblox_GM431946152.pdfIn PDF document text
    • https://consorziocsa-asicaivano.it/images/minecraft-free-download-mac-full-version-2021_GM479516143.pdfIn PDF document text
    • https://consorziocsa-asicaivano.it/images/free-spin-link-for-coin-master-game_GM406889139.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_off00004d56.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4D56 25808 bytes
SHA-256: 3b5f7b291043341bae5245f379f3e3d9f83efea40fbf5eff76d19a190e715759
font_01_sfnt_off000087b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87B6 17948 bytes
SHA-256: 5e3ba7e4cd3ca4e9461728952bafe8ac7745d23e1bc3d1385ef5be4278fd35be

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