Malicious PDF — malware analysis report

Static analysis result for SHA-256 54b4f77bc1c76c59…

MALICIOUS

PDF

40.0 KB Created: 2021-04-22 20:24:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: bde3f48c8dd945ba592a4238821e88fc SHA-1: 7d99c06c3b2ed2fcaaf5a5495302de8a90c7ca46 SHA-256: 54b4f77bc1c76c59ba58e83d52cd9b86fae6b5dbc4a5590c02c83d5c3cc42deb
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/linkmon99-free-robux-game-hack PDF link annotation
    • http://www.dynamitbogen.dk/billeder/cheat-engine-roblox-weight-lifting-simulator.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-download-free-microsoft.pdfIn PDF document text
    • http://www.dynamitbogen.dk/billeder/hacker-robux-2021.pdfIn PDF document text
    • http://www.dynamitbogen.dk/billeder/roblox-hacks-dll-downloads.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/cheat-roblox-jailbreak-tembus-2021.pdfIn PDF document text
    • http://www.dynamitbogen.dk/billeder/roblox-tycoon-money-hack-no-cheat-engine.pdfIn PDF document text
    • http://www.dynamitbogen.dk/billeder/free-model-roblox-eggs.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
font_00_sfnt_off0000409a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x409A 24840 bytes
SHA-256: 3676cc3b0405fca3e9bf04f7745b5c32917ac67839270f0d070936e07e010b5d
font_01_sfnt_off00007973.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7973 18728 bytes
SHA-256: 0f30d46202d3006fa830fc71368988d68e9657bc7419b618a36c095f2c0b9f19

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