PDF malware analysis — malicious · 653299cb635ae5a8

MALICIOUS

PDF

34.9 KB Created: 2021-07-01 02:54:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01

MD5: bddbbb5fda2bc5a349ec93e17cd880a9 SHA-1: d9e8ac1c0e079eaad1885b5ee69844a329f23f06 SHA-256: 653299cb635ae5a87f03b1729c9a4c8a31ceaf4b91ed19fd3b8181fb547e75c1

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-generator-no-human-verification-or-survey-2021-game-hack PDF link annotation
- https://www.advancissurgical.com/uploads/files/files/how-to-make-a-minecraft-java-server-for-free_GM479516143.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/free-robux-games-that-actually-work_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/freespinandcoinblogspot-com-2021-11-coinmasterfreespins_GM406889139.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/free-bugatti-roblox_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/how-to-get-free-spins-in-shinobi-life-roblox-125_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/free-robux-no-download_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/comment-hacker-le-cataloggue-de-roblox-2021_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/where-to-get-roblox-hacks_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/free-followers-roblox-generator_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/how-to-hack-some-in-roblox_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/free-synapse-roblox-2021_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/how-to-get-free-robux-august-2021-27th_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/free-minecraft-maps_GM479516143.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/how-to-hack-in-entry-point-roblox_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/free-account-roblox-2021_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/minecraft-pe-hack-client-2021_GM479516143.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/coin-master-game-download-free_GM406889139.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/coin-master-hack-no-verification-2021_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_off0000301c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x301C	21820 bytes
SHA-256: `11a56062b6d2881607b0f0bc31247e991387a57430f69fa91530a72cc1eef433`
`font_01_sfnt_off00006045.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6045	20028 bytes
SHA-256: `862718f3553914d13e7050f30ddf7e0bf5fdf78324d2cf1d5c4be66b223f3a80`

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