PDF malware analysis — malicious · a89dab583314c84d

MALICIOUS

PDF

45.8 KB Created: 2021-06-03 15:23:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01

MD5: b25a8ab02108ae0644130395d7b35379 SHA-1: 162c9cf200763f330a53e6b4023f180e781d4a17 SHA-256: a89dab583314c84db81c92275dc9734ab39cc04ee2240d8ce16df71eae624845

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 0.9864

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/free-robux-no-human-verification-or-survey-2021-game-hack PDF link annotation
- https://www.jcn.co.uk/uploads/files/files/coin-master-hack-tips_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/best-free-hacked-client_GM479516143.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/how-to-download-minecraft-for-free-on-iphone_GM479516143.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/how-to-get-a-free-minecraft-server_GM479516143.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/ways-to-earn-robux_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/coin-master-fan-club_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/minecraft-mod-menu_GM479516143.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/master-coin-free-spin_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/how-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/free-spins-coin-master-links-blogspot_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/roblox-games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/free-robux-scams_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/free-tiktok-followers-without-verification_GM835599320.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/worst-roblox-avatars_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/25-free-spins-coin-master_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/free-robux-no-verification-2021-ios_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/free-spin-link-coin-master-app_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/can-i-get-robux-for-free_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/free-spin-link-for-coin-master-game_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/pokemon-go-free-7-day-streak-rewards_GM1094591345.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_004_off00004f0f.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4F0F	26400 bytes
SHA-256: `5d5b47df30fc27deabd54f8cb116dd1460559102288f8865ea5491fbbc3bd68e`
`font_01_sfnt_off00008c8e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8C8E	19556 bytes
SHA-256: `08b2a18d96b3566ec838f0e87c4bb916e955b8f8af04b9064418114d078945b8`

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