PDF malware analysis — malicious · 6fdb01eee1b7890e

MALICIOUS

PDF

35.3 KB Created: 2021-06-25 03:15:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18

MD5: a78779b192fa0fe2312d317c7594248c SHA-1: ab9ef7bdd5f5a6ebe8d4290ad51cf6d52b3db10e SHA-256: 6fdb01eee1b7890e3fefb20b279d8bd8f8f74204b0a7bb04ea5b4a5264b4cca9

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains a lure for game hacks and free currency, directing users to the malicious URL http://netcdn.co/app/406889139/coin-master-free-spins-cash-game-hack. This URL is likely intended to deliver a secondary payload or lead to a phishing page. The ML classifier also flagged this PDF as malicious with high confidence.

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/coin-master-free-spins-cash-game-hack PDF link annotation
- https://www.advancissurgical.com/uploads/files/files/2021-free-robux-windows-8_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/free-robux-no-scam_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/pokemon-go-free-quest-guide_GM1094591345.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/coin-master-free-spins-link_GM406889139.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/how-to-get-free-robux-without-downloading-apps-2021_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/free-robux-survey_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/robux-generator-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/hackear-coin-master_GM406889139.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/free-spin-link-for-coin-master-game_GM406889139.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/i-got-hacked-on-roblox_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/how-to-get-free-robux-promo-codes_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/free-robux-cards_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/classic-minecraft-net-hacks_GM479516143.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/how-to-hack-roblox-accounts-without-email_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/apex-adventure-roblox-hack_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/are-minecraft-realms-free_GM479516143.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/coin-master-game-hack-apk_GM406889139.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/archery-master-3d-apk-and-mod-free-download-unlimited-coins_GM406889139.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/roblox-hack-get-infinate-money-on-bloxburg_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
`stream_002_off000032c4.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x32C4	23240 bytes
SHA-256: `c13ea4b90961f204abcaca394d98a0e1649706be49eeb13ee69f1b6d36bfe416`
`font_01_sfnt_off00006779.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6779	18340 bytes
SHA-256: `31b040f11d31e2c25a3918167828aea55bdad87c8eae0a9348126ed232a1d2b9`

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