PDF malware analysis — malicious · bd6b654771779a93

MALICIOUS

PDF

34.8 KB Created: 2021-07-03 13:01:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 7dc012c9c3d54c5d5add22641b2575ac SHA-1: dd40cb112e2d7a09f65c232ee2980a9150bd8705 SHA-256: bd6b654771779a93608b92c83c6ebce23b832332ff546678a167a283d588efe4

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 0.9980

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.tw/app/406889139/hack-coin-master-free-game-hack PDF link annotation
- https://mountainholidaytreks.com/userfiles/files/coin-master-hack-spins-and-coins-unlimited-free_GM406889139.pdfIn PDF document text
- https://mountainholidaytreks.com/userfiles/files/coin-master-2021_GM406889139.pdfIn PDF document text
- https://mountainholidaytreks.com/userfiles/files/games-on-roblox-that-give-you-free-robux_GM431946152.pdfIn PDF document text
- https://mountainholidaytreks.com/userfiles/files/coin-master-hack-tips_GM406889139.pdfIn PDF document text
- https://mountainholidaytreks.com/userfiles/files/pokemon-go-free-trainer-codes_GM1094591345.pdfIn PDF document text
- https://mountainholidaytreks.com/userfiles/files/free-robux-for-free_GM431946152.pdfIn PDF document text
- https://mountainholidaytreks.com/userfiles/files/coin-master-free-download-pc_GM406889139.pdfIn PDF document text
- https://mountainholidaytreks.com/userfiles/files/robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
- https://mountainholidaytreks.com/userfiles/files/legit-coin-master-hack-october-2021_GM406889139.pdfIn PDF document text
- https://mountainholidaytreks.com/userfiles/files/how-to-get-10-000-robux-for-free-on-ipad_GM431946152.pdfIn PDF document text
- https://mountainholidaytreks.com/userfiles/files/free-spin-link-coin-master_GM406889139.pdfIn PDF document text
- https://mountainholidaytreks.com/userfiles/files/roblox-earn-robux_GM431946152.pdfIn PDF document text
- https://mountainholidaytreks.com/userfiles/files/coin-master-hack-app-download-free_GM406889139.pdfIn PDF document text
- https://mountainholidaytreks.com/userfiles/files/minecraft-pvp-hacks_GM479516143.pdfIn PDF document text
- https://mountainholidaytreks.com/userfiles/files/hack-de-como-tener-robux-gratis_GM431946152.pdfIn PDF document text
- https://mountainholidaytreks.com/userfiles/files/free-robux-codes-2021_GM431946152.pdfIn PDF document text
- https://mountainholidaytreks.com/userfiles/files/coin-master-free-link_GM406889139.pdfIn PDF document text
- https://mountainholidaytreks.com/userfiles/files/make-free-robux_GM431946152.pdfIn PDF document text
- https://mountainholidaytreks.com/userfiles/files/wurst-mc_GM479516143.pdfIn PDF document text
- https://mountainholidaytreks.com/userfiles/files/hack-coin-master-free-spins_GM406889139.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_off00002ff4.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x2FF4	23724 bytes
SHA-256: `4a51438776354b2a4056ae086327e6a897cfe639b9e7c08e812f01a6ba30ff3d`
`font_01_sfnt_off000065ea.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x65EA	18168 bytes
SHA-256: `be72a1914a99b846651b156c672e0768d1f742f579973333786d0ab12deac364`

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