PDF malware analysis — malicious · 87a225ee8159d70d

MALICIOUS

PDF

36.4 KB Created: 2021-07-01 23:09:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-02

MD5: 0a739ffa17a6c9c761e4886ddfbb1259 SHA-1: 58e499dee70cde826073b4a0d1e78802263d1896 SHA-256: 87a225ee8159d70d21069073d690360cb8cef4276a3ee7222044df8ec718e1b4

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/406889139/free-spins-and-coins-for-coin-master-game-game-hack PDF link annotation
- https://www.advancissurgical.com/uploads/files/files/download-hacks-for-roblox-jailbreak_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/how-to-become-a-hacker-in-roblox_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/coin-master-free-spins-without-human-verification_GM406889139.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/hack-roblox-jailbreak_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/coin-master-hack-download-android_GM406889139.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/robux-free-online_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/roblox-free-clothes-girl_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/coin-master-hack-co_GM406889139.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/how-to-get-minecraft-for-free-on-iphone_GM479516143.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/free-spins-for-coin-masters_GM406889139.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/can-you-change-your-username-on-roblox-for-free_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/free-robux-codes-no-human-verification_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/free-robux-hack_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/coin-master-free-spins-daily_GM406889139.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/roblox-printables-free_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/roblox-games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/minecraft-pe-hacks-ios_GM479516143.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/free-spins-and-coins-for-coin-master_GM406889139.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/coin-master-free-download-pc_GM406889139.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/coin-master-hacks-free-spins_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
`stream_002_off00003526.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x3526	23592 bytes
SHA-256: `8308ed295b9780f9d1dcfd202660e45a3e1fdefdf11f98ec2d97aef63ffb4ce2`
`font_01_sfnt_off00006acb.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6ACB	18608 bytes
SHA-256: `31982f023cf9e8334e0247a56239ce43a369afef10c4502d97e5781750ca878f`

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