PDF malware analysis — malicious · 6b308cb120eb4c6f

MALICIOUS

PDF

34.1 KB Created: 2021-06-25 17:18:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01

MD5: 208d0e16f151b7d0b2ff03712bd0590d SHA-1: 253e69bd6aa47c4585a7ae670fc10887a3f09b5b SHA-256: 6b308cb120eb4c6f03d1c4f8acf1a82534a8460ab71e5140cc41ce44a045f300

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

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.co/app/431946152/free-robux-no-hack-no-survey-game-hack PDF link annotation
- https://www.advancissurgical.com/uploads/files/files/free-robux-with-no-verification_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/promo-codes-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/free-roblox-clothes-codes_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/free-roblox-hoods_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/donttazemebro-roblox-person-hes-a-hacker_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/minecraft-build-hacks_GM479516143.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/coin-master-free-coins-and-spins-online-tool_GM406889139.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/free-robux-website_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/coin-master-daily-free-cards_GM406889139.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/free-unlimited-coin-master-400-spin-link_GM406889139.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/fire-roblox-hack_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/minecraft-hacks-wurst_GM479516143.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/60-free-spins-coin-master_GM406889139.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/free-robux-no-email_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/coin-master-hack-2021_GM406889139.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/roblox-free-accounts-real-obc_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/robux-case-for-free-robux-pastebin_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/orewards-com-free-robux_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/how-to-get-free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/free-roblox-accounts-with-robux-that-work-2021_GM431946152.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_off00002de9.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2DE9	22408 bytes
SHA-256: `f51e3ab7f08f72d3f6e9720bcf820a63f88feb3d9ed6d534cad6ceb018817f13`
`font_01_sfnt_off00005fa9.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5FA9	19180 bytes
SHA-256: `0749c1ae0026eb1f4a71c456769c0a4206d58cab22b0c6c14d595fe865878a15`

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