Malicious PDF — malware analysis report

Static analysis result for SHA-256 b90f0ae1cf95c435…

MALICIOUS

PDF

47.4 KB Created: 2021-05-21 10:30:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 7a13a76d0a31845461b56b614246b52c SHA-1: 12a566271c50344b9ace3cec3a410031a8b0536b SHA-256: b90f0ae1cf95c4356e1e0625eab5960c96bf2c290bc2f674a602c32d7759fc15
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple lures related to 'free Robux' and 'game hacks', directing users to external URLs. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' strongly indicates a social engineering attempt to trick users into visiting potentially malicious sites. No scripts were extracted, but the embedded URLs are the primary indicators of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7358

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://gingerscience.co.in/images/how-to-get-robux-on-phone_GM431946152.pdfIn PDF document text
    • http://gingerscience.co.in/images/coin-master-hack-apk-2021-download_GM406889139.pdfIn PDF document text
    • http://gingerscience.co.in/images/roblox-royale-high-diamond-hack_GM431946152.pdfIn PDF document text
    • http://gingerscience.co.in/images/free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://gingerscience.co.in/images/how-to-hack-coin-master-game-2021_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_off000033a7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x33A7 30536 bytes
SHA-256: fb59f815882c93f201a4c11c073be204757608b3740d516fe33f6b34d22bb439
font_01_sfnt_off00007887.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7887 8704 bytes
SHA-256: ddfd86c88a6b8304bc31eeb9f28c8110fac325cdacc87503bacf4ac741777490
font_02_sfnt_off000094f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x94F2 19368 bytes
SHA-256: a82984a519d7edf94c6531cfcf7f8df3cbe602e214b877051ae5dee029c294bf

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