Malicious PDF — malware analysis report

Static analysis result for SHA-256 35da97d154a71105…

MALICIOUS

PDF

41.2 KB Created: 2021-04-22 16:31:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: ddb33d293fb3aac815e4024f88f5b686 SHA-1: a6f99d30d6481504264c7b57422c595267812ebf SHA-256: 35da97d154a71105a038f7dde3231dcf2bd1716d9546a1803f450f25fb12d8d9
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 0.9945

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/roblox-play-for-free-online-no-download-game-hack PDF link annotation
    • http://www.dynamitbogen.dk/billeder/free-model-roblox-eggs.pdfIn PDF document text
    • http://www.dynamitbogen.dk/billeder/cheat-roblox-jailbreak-tembus-2021.pdfIn PDF document text
    • http://www.dynamitbogen.dk/billeder/umpteen-hacks-roblox.pdfIn PDF document text
    • http://www.dynamitbogen.dk/billeder/lol-robloxcant-patch-the-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/roblox-hacks-dll-downloads.pdfIn PDF document text
    • http://www.dynamitbogen.dk/billeder/how-to-hack-roblox-for-rebirth.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-engine-roblox-weight-lifting-simulator.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_off00003f28.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3F28 27264 bytes
SHA-256: 2508ccabaac61758ecd8c88151874c5eb83a3e84d9fda7a9e517057847402a29
font_01_sfnt_off00007ce0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CE0 19136 bytes
SHA-256: d2070cfba7fe2681ffb7d551e3d1110a53aaeb98a8467f8a8f757c9ee2c958f6

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