Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d78e34885b99ae1…

MALICIOUS

PDF

42.8 KB Created: 2021-04-30 11:38:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: b0776bb9d126caa24242d79e8f4ef4a2 SHA-1: c58562c2ed9aa5fb869dabe180703260856139fb SHA-256: 6d78e34885b99ae1c3a30389202c67790f2df29602a1fc20cbbdc407a144a68a
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 0.9941

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/withdraw-robux-free-game-hack PDF link annotation
    • http://www.technibuild-group.com/uploaded_files/userfiles/files/roblox-cheat-fly-cheat-tab.pdfIn PDF document text
    • http://www.technibuild-group.com/uploaded_files/userfiles/files/free-robux-no-human-verificationcom.pdfIn PDF document text
    • http://technibuild-group.com/uploaded_files/userfiles/files/yotube-hacker-robux.pdfIn PDF document text
    • http://technibuild-group.com/uploaded_files/userfiles/files/hack-exploit-for-roblox-no-virus.pdfIn PDF document text
    • http://www.technibuild-group.com/uploaded_files/userfiles/files/free-roblox-gift-card-code-generator-2021.pdfIn PDF document text
    • http://www.technibuild-group.com/uploaded_files/userfiles/files/free-robux-no-game-download.pdfIn PDF document text
    • http://www.technibuild-group.com/uploaded_files/userfiles/files/admin-codes-that-give-you-free-robux-2021-working.pdfIn PDF document text
    • http://www.technibuild-group.com/uploaded_files/userfiles/files/free-roblox-hair-to-wear.pdfIn PDF document text
    • http://technibuild-group.com/uploaded_files/userfiles/files/are-free-robux-games-real.pdfIn PDF document text
    • http://www.technibuild-group.com/uploaded_files/userfiles/files/www-free-robux-partycom.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_off000045c0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x45C0 27332 bytes
SHA-256: 6abf951bc2c6286c09feefb8b0a7d59867d8d091aad7cd0c1549f37dfcdde76b
font_01_sfnt_off000082e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82E5 19168 bytes
SHA-256: 81cf775059393fc6c0e8b77fc990b6ea778313cd2cfae0292aeeee97036a138c

Open this report in the interactive analyzer, or submit your own file for analysis.