Malicious PDF — malware analysis report

Static analysis result for SHA-256 dcdd133861fdeab7…

MALICIOUS

PDF

41.0 KB Created: 2021-04-22 20:23:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 49d2631c9c3b610c96d8f516c8d8f711 SHA-1: 89bc2ea436569dbff53fa3c2a52766ec90a6eca4 SHA-256: dcdd133861fdeab71730ca5a7c9ff9129aa50a769f93b861560c0d4fb4bc987d
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. It uses an urgency-based lure. 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 0.9941

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://netsecure.pro/app/431946152/roblox-free-danlod-game-hack PDF link annotation
    • http://www.hawler.in/images/pastebin-com-hack-robux.pdfIn PDF document text
    • http://www.hawler.in/images/jd-roblox-free-knife-code.pdfIn PDF document text
    • http://www.hawler.in/images/hack-roblox-robux-generator.pdfIn PDF document text
    • http://www.hawler.in/images/roblox-how-to-get-shirts-for-free.pdfIn PDF document text
    • http://www.hawler.in/images/dll-files-hack-for-roblox-vehicle-simulator-2021.pdfIn PDF document text
    • http://www.hawler.in/images/naruto-new-generations-roblox-hack.pdfIn PDF document text
    • http://www.hawler.in/images/roblox-bin-hacked.pdfIn PDF document text
    • http://www.hawler.in/images/gcomment-hacker-strucid-roblox.pdfIn PDF document text
    • http://www.hawler.in/images/free-giftcards-de-roblox.pdfIn PDF document text
    • http://www.hawler.in/images/easy-hacks-of-money-for-rocitizens-roblox.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_off000041be.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x41BE 25960 bytes
SHA-256: 794f31ee7e993c673c519e006d823f12918a1c6b2129d32376ae409c8a76959e
font_01_sfnt_off00007dde.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DDE 18520 bytes
SHA-256: 9b56f9e5b99c12454170eade079ae4b786f9964434aede663a5e209bb0ab7781

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