PDF malware analysis — malicious · 4c9a6ed601d87de5

MALICIOUS

PDF

41.6 KB Created: 2021-05-15 13:32:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 7e9d67f0a0e31feb41301a9e58e8667e SHA-1: ab632044e7d20e019afc83b1225ce7c568042201 SHA-256: 4c9a6ed601d87de570a49cdf89d226e2deb865bac4d313d99317d8596ad896e0

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 0.9971

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/how-long-is-the-minecraft-free-trial-game-hack PDF link annotation
- https://www.knjigebuducnosti.com/files/wurst-112_GM479516143.pdfIn PDF document text
- https://www.knjigebuducnosti.com/files/coin-master-hack-mod-apk_GM406889139.pdfIn PDF document text
- https://www.knjigebuducnosti.com/files/will-minecraft-dungeons-be-free_GM479516143.pdfIn PDF document text
- https://www.knjigebuducnosti.com/files/minecraft-free-download-linux_GM479516143.pdfIn PDF document text
- https://www.knjigebuducnosti.com/files/coin-master-free-stuff_GM406889139.pdfIn PDF document text
- https://www.knjigebuducnosti.com/files/microsoft-roblox-rewards_GM431946152.pdfIn PDF document text
- https://www.knjigebuducnosti.com/files/free-links-for-coin-master_GM406889139.pdfIn PDF document text
- https://www.knjigebuducnosti.com/files/how-to-get-free-clothing-on-roblox_GM431946152.pdfIn PDF document text
- https://www.knjigebuducnosti.com/files/free-coin-master-spins-link_GM406889139.pdfIn PDF document text
- https://www.knjigebuducnosti.com/files/coin-master-free-coins-and-spins-link-today_GM406889139.pdfIn PDF document text
- https://www.knjigebuducnosti.com/files/how-to-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
- https://www.knjigebuducnosti.com/files/coin-master-free-spins-and-coins-daily-links_GM406889139.pdfIn PDF document text
- https://www.knjigebuducnosti.com/files/free-coin-master-spins-daily_GM406889139.pdfIn PDF document text
- https://www.knjigebuducnosti.com/files/how-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
- https://www.knjigebuducnosti.com/files/coin-master_GM406889139.pdfIn PDF document text
- https://www.knjigebuducnosti.com/files/how-to-get-free-robux-without-verifying-2021_GM431946152.pdfIn PDF document text
- https://www.knjigebuducnosti.com/files/roblox-pics_GM431946152.pdfIn PDF document text
- https://www.knjigebuducnosti.com/files/coin-master-100-spin-slot_GM406889139.pdfIn PDF document text
- https://www.knjigebuducnosti.com/files/free-minecraft-hacks_GM479516143.pdfIn PDF document text
- https://www.knjigebuducnosti.com/files/free-robux-ad_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_003_off000048ce.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x48CE	24572 bytes
SHA-256: `1f325842a2248008053c38e473cac52cb1defa2df309d1ed774567a04568d3e2`
`font_01_sfnt_off00007ffe.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7FFE	18404 bytes
SHA-256: `a06c3727584f03e67681882c5fba84b6811554b03e9a9932a6f4547f5427a867`

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