Malicious PDF — malware analysis report

Static analysis result for SHA-256 01a4130a1eeaf680…

MALICIOUS

PDF

41.9 KB Created: 2021-05-23 13:35:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 3df333425d29d76d4a2d3243fe0c3330 SHA-1: 022f90e217f644704924a415581c99f25603bf0d SHA-256: 01a4130a1eeaf6804037c92d8c238d82f7ff004c9a3d23e1e23e7effe880c20e
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to game hacks, specifically 'Free Ways To Get Robux', and includes a link that redirects to a malicious domain. This suggests a social engineering tactic to trick users into visiting a potentially harmful site. The presence of embedded links and the ML classifier's flagging indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7466

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-ways-to-get-robux-game-hack PDF link annotation
    • http://shinarb.by/images/free-robux-real_GM431946152.pdfIn PDF document text
    • http://shinarb.by/images/coin-master-free-cards-link-2021_GM406889139.pdfIn PDF document text
    • http://shinarb.by/images/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://shinarb.by/images/free-roblox-clothes-girl_GM431946152.pdfIn PDF document text
    • http://shinarb.by/images/roblox-gift-card-for-free_GM431946152.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_off00003415.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3415 27904 bytes
SHA-256: 3cbca78bf5966ab9c7cf7c4a4f4a197f7d6df3c3a4081ab86e9c6383856bd011
font_01_sfnt_off00007524.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7524 3500 bytes
SHA-256: e49a868379cd3c37e631c5a53c010e21f38d803532a2b8417aee82315d4e8634
font_02_sfnt_off000080c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80C6 18724 bytes
SHA-256: 4748f019d46a9554f00c7c8cf9bb59ec204dfb95bc520e2d25b5a7c8ef81b270

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