PDF malware analysis — malicious · 0cf76f42a8570d3c

MALICIOUS

PDF

45.1 KB Created: 2021-05-15 01:36:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01

MD5: e9eac8600ed2c4203f4db1c5fcb18a26 SHA-1: 32ccb85eaa271d5771b41e2629124cf7d60c582e SHA-256: 0cf76f42a8570d3c1cddd5851637c90d53caacc1b7f750cd34692f8b609de004

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 0.9621

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.xyz/app/479516143/minecraft-bedrock-hacks-windows-10-game-hack PDF link annotation
- http://www.donjastubica.hr/files/free-spins-coin-master-ios-2021_GM406889139.pdfIn PDF document text
- https://www.donjastubica.hr/files/flame-gg-free-robux_GM431946152.pdfIn PDF document text
- http://www.donjastubica.hr/files/free-spins-coins-coin-master_GM406889139.pdfIn PDF document text
- https://www.donjastubica.hr/files/coin-master-hack-fast_GM406889139.pdfIn PDF document text
- https://www.donjastubica.hr/files/how-do-we-get-free-robux_GM431946152.pdfIn PDF document text
- http://www.donjastubica.hr/files/rbxoffer-com-free-robux_GM431946152.pdfIn PDF document text
- http://www.donjastubica.hr/files/coin-master-hack-spin-160-pro_GM406889139.pdfIn PDF document text
- https://www.donjastubica.hr/files/free-coin-master-hack-no-verification_GM406889139.pdfIn PDF document text
- https://www.donjastubica.hr/files/coin-master-hack-twitter_GM406889139.pdfIn PDF document text
- http://www.donjastubica.hr/files/free-minecraft-pe-server_GM479516143.pdfIn PDF document text
- https://www.donjastubica.hr/files/roblox-hack-scripts-pastebin_GM431946152.pdfIn PDF document text
- http://www.donjastubica.hr/files/get-2021-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
- http://www.donjastubica.hr/files/good-free-minecraft-server-hosting_GM479516143.pdfIn PDF document text
- https://www.donjastubica.hr/files/coin-master-coins_GM406889139.pdfIn PDF document text
- https://www.donjastubica.hr/files/free-roblox-account-generator_GM431946152.pdfIn PDF document text
- http://www.donjastubica.hr/files/roblox-mobile-hack_GM431946152.pdfIn PDF document text
- http://www.donjastubica.hr/files/hack-coin-master-game_GM406889139.pdfIn PDF document text
- http://www.donjastubica.hr/files/how-to-hack-roblox-2021_GM431946152.pdfIn PDF document text
- http://www.donjastubica.hr/files/how-to-get-minecraft-bedrock-edition-for-free_GM479516143.pdfIn PDF document text
- http://www.donjastubica.hr/files/coin-master-gameplay_GM406889139.pdfIn 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_003_off000049f6.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x49F6	24488 bytes
SHA-256: `c9a4d9efc5b43af288df2c68d372ae994b99638dde04d0a09db08cb3bd16b9cd`
`font_01_sfnt_off000081ab.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x81AB	3128 bytes
SHA-256: `801f6fa60decd1add2f223f91580103c35e150c924465f86a7a572b3e00674f9`
`font_02_sfnt_off00008bea.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8BEA	18908 bytes
SHA-256: `18cbca0e50f7f5b28a778cfbd569d1baac665ff56cf18fe3f86cb3ac4da3e820`

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