Malicious PDF — malware analysis report

Static analysis result for SHA-256 8617ac5a1dfbccf8…

MALICIOUS

PDF

41.4 KB Created: 2021-04-28 05:01:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-23
MD5: d54fecbacb7d0672e709a341943ecd69 SHA-1: ddf43761d744f84573882640ec18f86988ba359f SHA-256: 8617ac5a1dfbccf8513c804fe0c48b7bde3c466597e840c283fbe03457390c9b
76 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. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED
    The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PDFSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
  • 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/dinosaur-simulator-roblox-hacks-game-hack PDF link annotation
    • https://redaksi9.com/new/public/ckfinder/userfiles/files/april-1-roblox-hack.pdfIn PDF document text
    • https://redaksi9.com/new/public/ckfinder/userfiles/files/vechlie-simulator-for-free-roblox.pdfIn PDF document text
    • https://redaksi9.com/new/public/ckfinder/userfiles/files/hack-de-atravesar-paredes-roblox.pdfIn PDF document text
    • https://redaksi9.com/new/public/ckfinder/userfiles/files/are-robux-hack-legit-forums.pdfIn PDF document text
    • https://redaksi9.com/new/public/ckfinder/userfiles/files/safe-free-robux-no-password-or-human-verification.pdfIn PDF document text
    • https://redaksi9.com/new/public/ckfinder/userfiles/files/how-to-get-free-robux-no-generator-2021.pdfIn PDF document text
    • https://redaksi9.com/new/public/ckfinder/userfiles/files/cheat-engine-roblox-crash.pdfIn PDF document text
    • https://redaksi9.com/new/public/ckfinder/userfiles/files/como-hackear-cuentas-de-roblox.pdfIn PDF document text
    • https://redaksi9.com/new/public/ckfinder/userfiles/files/how-to-hack-acc-in-roblox-kazok.pdfIn PDF document text
    • https://redaksi9.com/new/public/ckfinder/userfiles/files/free-roblox-account-generatorold-account-spiiltz-rico.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 4

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000434d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x434D 26752 bytes
SHA-256: 2fa9cb90b26a85ea0ee302d00f1032408cb04e056faa9d41cde0c3a5f5af7c4e
font_01_sfnt_off0000812b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x812B 18972 bytes
SHA-256: fa02ea3e204ce776b38d95c1b8beb207922910725a60a7e1a398f61400750d2a

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