PDF malware analysis — malicious · 9a85d518502fdb78

MALICIOUS

PDF

46.9 KB Created: 2021-06-03 14:48:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01

MD5: a4d7042dfa44119b00ad948787a5aadc SHA-1: 7e4c37fe866256d17209dc4bc82290a9717cbc4b SHA-256: 9a85d518502fdb78cf1ed86f77e1c7dad51996cae8d6b7959dc8f017c725e9a5

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 0.9769

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 https://netcdn.online/app/431946152/how-to-free-robux-game-hack PDF link annotation
- https://www.advancissurgical.com/uploads/files/files/free-robux-giveaway-live_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/free-coin-master-cards_GM406889139.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/hack-coin-master-8-ball-pool_GM406889139.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/coin-master-gold-cards-hack_GM406889139.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/coin-master-free-spin-codes_GM406889139.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/how-to-change-your-name-in-roblox-for-free_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/minecraft-bedrock-hacks_GM479516143.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/how-do-u-get-robux_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/free-robux-gift-card-generator_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/minecraft-bedrock-download_GM479516143.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/www-coin-master_GM406889139.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/coin-master-free-spins-link-today-new-2021_GM406889139.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/free-tiktok-followers-no-downloads_GM835599320.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/how-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/minecraft-free-ios-no-verification_GM479516143.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/links-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/roblox-hack-ga_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/robuxmatchcom-free-robux_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/free-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/roblox-free-executor_GM431946152.pdfIn PDF document text
- https://www.micIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_004_off00004f8a.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4F8A	25500 bytes
SHA-256: `f4a796f004e679425df19a99222edb888fdae3ade4262ed470ac4c47aecf35c9`
`font_01_sfnt_off00008af3.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8AF3	2892 bytes
SHA-256: `c2578a292634a901613c1dd9f9883dd4930e6811e59ae03d696f263e56ea17b4`
`font_02_sfnt_off000094dd.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x94DD	18180 bytes
SHA-256: `b892188b0545c7b74f3e706ff7289536b8608c6e24b963a14dda60cd6c46c02c`

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