Malicious PDF — malware analysis report

Static analysis result for SHA-256 dbe59232750357b8…

MALICIOUS

PDF

43.9 KB Created: 2021-04-30 07:55:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 95b9885b544473277fd07b231b5037f2 SHA-1: e31cd1cf9bd966b7ebb1a7c7599799106df15263 SHA-256: dbe59232750357b8d4e55504721ad24a27fc9365397eacc9abbe50b93f7c397f
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for game hacks, specifically 'Roblox Hack Set Robux 2021', directing users to a suspicious URL. This indicates a phishing or scam attempt designed to trick users into visiting a malicious site. No scripts were extracted, but the embedded URI and document content strongly suggest a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9868

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/roblox-hack-set-robux-2021-game-hack PDF link annotation
    • https://fridaytravelnepal.com/userfiles/files/hacks-in-bee-swarm-simulator-roblox.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/free-robux-just-watch-ads.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/giving-people-free-robux-livestream.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/lazybux-com-free-robux.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/roblox-hack-robux-2021-unlimited-robux-and-tix.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/cheats-for-royale-high-school-on-roblox.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/free-roblox-hack-without-human-verification.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/free-robux-code-on-roblox.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/roblox-tix-hack-download.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/free-robux-generator-no-virus.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_003_off0000423d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x423D 26216 bytes
SHA-256: fd946242b2cc0238ccbf7ad77423387329898918561a7e0c722752e897277a34
font_01_sfnt_off00007e3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E3D 2832 bytes
SHA-256: 77ae1c4cffa647a8fd533dfa4102e94364989f9e80b9cd131876e9d1005899a2
font_02_sfnt_off000087ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87ED 18828 bytes
SHA-256: 2ef256062d032c5d13ac194597e2397ffc1dd55f6903796f3ca4fd40de996360