PDF malware analysis — malicious · b5406ba7922e38ae

MALICIOUS

PDF

34.3 KB Created: 2021-07-09 00:25:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05

MD5: 7030e1ac5882ae4602f08e13d58368db SHA-1: ad8c80c46aea04d5ae3d0df3ecdcffa44f0d5914 SHA-256: b5406ba7922e38ae8546aefea2f4912d5f18a105f63ee42b9eb9e80ac4e4c98d

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document contains a lure related to 'Free Robux Codes 2021' and links to a suspicious URL, http://netcdn.tw/app/431946152/free-robux-codes-2021-game-hack. The document body and heuristics indicate a social engineering tactic to redirect users to potentially malicious content. No scripts were extracted, but the PDF structure and embedded URLs suggest a phishing or scam attempt.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/431946152/free-robux-codes-2021-game-hack PDF link annotation
- https://www.orbai.ai/uploaded_files/userfiles/files/how-to-get-free-robux-in-1-minute_GM431946152.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/roblox-jailbreak-glitch-through-walls-hack_GM431946152.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/free-roblox-scrpters_GM431946152.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/how-to-get-free-robux-inspect-element-2021_GM431946152.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/free-robux-codes-no-human-verification_GM431946152.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/oprewards-free-robux_GM431946152.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/www-roblox-robux_GM431946152.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/roblox-free-clothes-hack_GM431946152.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/coin-master-free-coins-facebook_GM406889139.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/minecraft-pe-free_GM479516143.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/roblox-hack-tool_GM431946152.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/roblox-cheat-engine-hacks-2021_GM431946152.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/hack-free-spin-coin-master_GM406889139.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/free-game-pack-with-google-play-coin-master_GM406889139.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/coin-master-play-online-free_GM406889139.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/all-free-rthro-roblox_GM431946152.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/coin-master-spins-for-free_GM406889139.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/roblox-2all-site-free-robux_GM431946152.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/free-spins-and-coins-for-coin-master-game_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.

Filename	Kind	Source	Size
`font_00_sfnt_off00003097.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3097	21696 bytes
SHA-256: `6fd9f20f46ea8f247b225667481f77191b134f1962af511f948cc19c44f232a2`
`font_01_sfnt_off0000602c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x602C	19292 bytes
SHA-256: `a06e109f4742255b3e3bb25118cfd4c6c94882922bdfaa475a115917b157a644`

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