Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e156e83154cfa6a…

MALICIOUS

PDF

39.7 KB Created: 2021-04-22 20:27:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: f6bee7aed250438e4f0bc8026c54ec59 SHA-1: bca2e05be2f401857f2c5107544fd7cf755cb979 SHA-256: 6e156e83154cfa6a22ae5abbc5a8b8ff68e161b575285131f2cfc8692751f4ab
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.pro/app/431946152/how-to-get-free-robux-landonrb-game-hack PDF link annotation
    • http://www.dynamitbogen.dk/billeder/cheat-roblox-jailbreak-tembus-2021.pdfIn PDF document text
    • http://www.dynamitbogen.dk/billeder/roblox-download-free-microsoft.pdfIn PDF document text
    • http://www.dynamitbogen.dk/billeder/how-to-hack-roblox-accounts-with-command-prompt.pdfIn PDF document text
    • http://www.dynamitbogen.dk/billeder/how-to-hack-treadmills-roblox-heigth-lifting-sim.pdfIn PDF document text
    • http://www.dynamitbogen.dk/billeder/admin-commands-roblox-free-robux.pdfIn PDF document text
    • http://www.dynamitbogen.dk/billeder/roblox-all-free-items-list.pdfIn PDF document text
    • http://www.dynamitbogen.dk/billeder/how-to-get-free-robux-2021-not-patched-read-desc.pdfIn PDF document text
    • http://www.dynamitbogen.dk/billeder/roblox-play-for-free-online-no-download.pdfIn PDF document text
    • http://www.dynamitbogen.dk/billeder/roblox-hacks-dll-downloads.pdfIn PDF document text
    • http://www.dynamitbogen.dk/billeder/lol-robloxcant-patch-the-free-robux.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_off00003f19.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3F19 24716 bytes
SHA-256: f9c71749de0722e0d212eb7d08b082f255cc0ddae79e80c76ec117448185a309
font_01_sfnt_off000077e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77E2 18684 bytes
SHA-256: 79c39e4e4f39ed1395f0449841968547787b5f4e6a65289ca4e41d26debee411

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