Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce2977ccd3b10257…

MALICIOUS

PDF

37.3 KB Created: 2021-05-21 14:04:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 5a0e05f0ba018a5c52d70a942275cf11 SHA-1: 65d8573ba3a6d45ba14e6739d637e1784745fc6f SHA-256: ce2977ccd3b102570a66fc665e5fe02e8d4155b2a9cde13fcfa5b5125a6fd204
102 Risk Score

Malware Insights

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

The PDF document contains multiple links and text that promote 'free Minecraft hacked clients' and 'free Robux generators'. These are common lures used to trick users into downloading malicious software. The ML classifier also flagged this PDF as malicious, reinforcing the suspicious nature of the content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9447

Heuristics 5

  • 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.
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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/best-free-minecraft-hacked-client-game-hack PDF link annotation
    • http://www.bripi.pl/images/unlimited-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.bripi.pl/images/how-to-get-minecraft-for-free-on-iphone-2021_GM479516143.pdfIn PDF document text
    • http://www.bripi.pl/images/coin-master-map_GM406889139.pdfIn PDF document text
    • http://www.bripi.pl/images/free-minecraft-severs_GM479516143.pdfIn PDF document text
    • http://www.bripi.pl/images/free-robux-games-on-roblox_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_002_off00003676.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3676 25480 bytes
SHA-256: 2fcaddddabac1a7a91dcb6e39f601604227e4a3f96da5ff58279035cbaeee98e
font_01_sfnt_off000070df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70DF 18200 bytes
SHA-256: dee6b3909f49c7ddbb1ab18ee008f1775ca59041fcbdd753e186a80ce5ffdd4d

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