Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd13093c6e7795fc…

MALICIOUS

PDF

44.1 KB Created: 2021-04-29 14:16:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-22
MD5: f76ccaeb8420d6adef7f09a5a5042cd8 SHA-1: 9280cafc09bfcd7c84fe15b2326d8fb7bfc94028 SHA-256: dd13093c6e7795fc8e54ac035a6673a503829c9375727ab41233ba7641c1af20
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 0.9868

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/roblox-game-pass-hack-game-hack PDF link annotation
    • https://www.disbel.es/ckfinder/userfiles/files/how-to-make-a-roblox-item-free.pdfIn PDF document text
    • https://www.disbel.es/ckfinder/userfiles/files/how-to-get-free-vip-in-fashion-famous-roblox.pdfIn PDF document text
    • https://www.disbel.es/ckfinder/userfiles/files/how-to-get-builders-club-on-roblox-for-free-2021.pdfIn PDF document text
    • https://www.disbel.es/ckfinder/userfiles/files/free-robux-glitch-march-2021.pdfIn PDF document text
    • https://www.disbel.es/ckfinder/userfiles/files/way-to-get-free-robux.pdfIn PDF document text
    • https://www.disbel.es/ckfinder/userfiles/files/roblox-free-expoit-that-run-loadstring.pdfIn PDF document text
    • https://www.disbel.es/ckfinder/userfiles/files/roblox-free-radio-in-jailbreak-deutsch.pdfIn PDF document text
    • https://www.disbel.es/ckfinder/userfiles/files/how-to-get-free-robux-and-free-codes-for-roblox.pdfIn PDF document text
    • https://www.disbel.es/ckfinder/userfiles/files/hack-to-join-empty-server-roblox.pdfIn PDF document text
    • https://www.disbel.es/ckfinder/userfiles/files/how-to-get-2021-robux-on-roblox-free-2021.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000040d7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x40D7 27844 bytes
SHA-256: df31c7487f8e2374efcfd9e32a3141fd6f27487dff168897b4e3ef804645c620
font_01_sfnt_off00007fc0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FC0 2832 bytes
SHA-256: 77ae1c4cffa647a8fd533dfa4102e94364989f9e80b9cd131876e9d1005899a2
font_02_sfnt_off00008970.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8970 18596 bytes
SHA-256: 3167d53d170ef01a413d3b4467ce2653b1b4399ec82590273c51d0919c2ca71d

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