Malicious PDF — malware analysis report

Static analysis result for SHA-256 4bf61449af895773…

MALICIOUS

PDF

38.1 KB Created: 2021-05-21 07:55:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 491f3a7a573b5b237ee84a8ed21dd332 SHA-1: 0caf12b7f493192ae9b9b7d6244b4276fbb4cc2b SHA-256: 4bf61449af895773634774e7a1bb47fe526c0e2e5c5854883d72255c30ced356
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to external websites, masquerading as game hacks or generators for popular games. The document body explicitly mentions 'Minecraft Dungeons Free Download' and 'CLICK HERE TO ACCESS MINECRAFT GENERATOR', indicating a lure to trick users into visiting malicious sites. The presence of embedded URLs and the ML classifier's high confidence score support this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9407

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/479516143/minecraft-dungeons-free-download-game-hack PDF link annotation
    • https://www.italisaitaly.com/uploaded_files/userfiles/files/free-robux-2021_GM431946152.pdfIn PDF document text
    • https://www.italisaitaly.com/uploaded_files/userfiles/files/free-robux-now_GM431946152.pdfIn PDF document text
    • https://www.italisaitaly.com/uploaded_files/userfiles/files/coin-master-free-food-for-pet_GM406889139.pdfIn PDF document text
    • https://www.italisaitaly.com/uploaded_files/userfiles/files/free-coin-master-game_GM406889139.pdfIn PDF document text
    • https://www.italisaitaly.com/uploaded_files/userfiles/files/free-spin-generator-for-coin-master_GM406889139.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_off000033e3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x33E3 27904 bytes
SHA-256: 557b53b2ea6f2c56bf7b973e98f7595b718d1cab0d17bfc5ad48192e7134307a
font_01_sfnt_off00007256.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7256 18720 bytes
SHA-256: 9131f8ae0af3742f2152d673706180936bbe7c3ea282a1fb4d0c655f83237649

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