Malicious PDF — malware analysis report

Static analysis result for SHA-256 41b488a971ad06c7…

MALICIOUS

PDF

37.7 KB Created: 2021-05-24 01:19:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 2e24a999998738bb600fbb98d566258e SHA-1: ee7a0d1a729eaab17e362f405b774c5ce47f044d SHA-256: 41b488a971ad06c7905bddb317f0af6c530eca2b87e3cb966fe8843f4d29fc6d
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 0.9447

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/rbx-free-robux-game-hack PDF link annotation
    • http://michalmatys.pl/images/how-to-play-coin-master_GM406889139.pdfIn PDF document text
    • http://michalmatys.pl/images/roblox-hack-scripts-pastebin_GM431946152.pdfIn PDF document text
    • http://michalmatys.pl/images/how-to-get-a-free-minecraft-account_GM479516143.pdfIn PDF document text
    • http://michalmatys.pl/images/coin-master-spin-link-today-2021_GM406889139.pdfIn PDF document text
    • http://michalmatys.pl/images/roblox-g_GM431946152.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_002_off00003385.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3385 28028 bytes
SHA-256: 9ac21f842b662be1060eeee494531149148c7953ad3ebce7308b1a4ffc55fe32
font_01_sfnt_off000072ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72EF 18012 bytes
SHA-256: 03f7603bc8a5695bbd0c39958af3fcfd5a932cbc13eba7563a8e8ca8b5ca4208

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