Malicious PDF — malware analysis report

Static analysis result for SHA-256 63f02b05c8015be0…

MALICIOUS

PDF

39.0 KB Created: 2021-04-23 10:52:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 28bd3a6b1463e7a1f63dacd21d83816b SHA-1: af13f5a17d3015a977b791a689bff94d664b663c SHA-256: 63f02b05c8015be025f6ccd8aea6b0f6f6a47231ca849795a198b40002c425de
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://netsecure.top/app/431946152/free-roblox-catolog-game-hack PDF link annotation
    • http://blueduna.com/images/roblox-jailbreak-cheats-noclip.pdfIn PDF document text
    • http://blueduna.com/images/app-free-robux-google-play.pdfIn PDF document text
    • http://blueduna.com/images/comment-avoir-un-hacker-sur-jailbreak-roblox.pdfIn PDF document text
    • http://blueduna.com/images/old-roblox-hack.pdfIn PDF document text
    • http://blueduna.com/images/robux-hack-no-survey-and-no-user-id.pdfIn PDF document text
    • http://blueduna.com/images/free-roblox-high-school.pdfIn PDF document text
    • http://blueduna.com/images/hack-hoogon123-on-roblox.pdfIn PDF document text
    • http://blueduna.com/images/roblox-is-there-a-way-to-get-free-robux.pdfIn PDF document text
    • http://blueduna.com/images/alone-battle-roytale-roblox-hacks-script-copy.pdfIn PDF document text
    • http://blueduna.com/images/roblox-hack-2021-may.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_off00003e70.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3E70 24080 bytes
SHA-256: 3093114175e5c9a9411ee03339148e4300917b5a8c928f1b62df7c20d382c53c
font_01_sfnt_off00007595.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7595 18568 bytes
SHA-256: d52a15b0e9b7e98b335f46afe1afac3aec337ffb137c868279e6f4ee68da476b

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