Malicious PDF — malware analysis report

Static analysis result for SHA-256 90b8affed7bc764a…

MALICIOUS

PDF

39.1 KB Created: 2021-05-24 03:10:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 00d7cc85481057bba50b0677d64ad648 SHA-1: 1ea5657052e3f9f3d97f1a5f1092fd6141551c5c SHA-256: 90b8affed7bc764af9da567682842c60f85ed276c78d5217faa75da210d12871
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 0.8060

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/free-robux-without-verification-2021-game-hack PDF link annotation
    • http://properteez.com/images/free-daily-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://properteez.com/images/free-robux-real-2021_GM431946152.pdfIn PDF document text
    • http://properteez.com/images/how-to-get-minecraft-for-free-on-xbox-one_GM479516143.pdfIn PDF document text
    • http://properteez.com/images/minecraft-bedrock-edition-free-with-java_GM479516143.pdfIn PDF document text
    • http://properteez.com/images/install-free-game-coin-master_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off0000314d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x314D 24932 bytes
SHA-256: 3f889a82afe5d317261b499a32e6b99fa4c77fae7644976a259afc73e76dc117
font_01_sfnt_off00006a3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A3C 2844 bytes
SHA-256: baad2f3f6808f4af03fa9398e38c580c8d846f7f773a947d8cc1f39b2753d31a
font_02_sfnt_off000073fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73FE 19368 bytes
SHA-256: a82984a519d7edf94c6531cfcf7f8df3cbe602e214b877051ae5dee029c294bf

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