PDF malware analysis — malicious · e80ca1b6ece6f961

MALICIOUS

PDF

34.3 KB Created: 2021-07-05 08:17:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: fa74cdb5f7a7cf9da2569d807d53622e SHA-1: 1155eb737407400af7ed53d9fd67a10b39c395c1 SHA-256: e80ca1b6ece6f961e22ef8cff4f971cc20fc7abf56fcc0c44e033f1d0a8f92bc

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/431946152/free-robux-roblox-promo-codes-game-hack PDF link annotation
- http://windhorsetrek.com/userfiles/files/coin-master-free-spin-download_GM406889139.pdfIn PDF document text
- http://windhorsetrek.com/userfiles/files/daily-free-spins-coin-master_GM406889139.pdfIn PDF document text
- http://windhorsetrek.com/userfiles/files/coin-master-hack-android_GM406889139.pdfIn PDF document text
- http://windhorsetrek.com/userfiles/files/roblox-free-robux-com_GM431946152.pdfIn PDF document text
- http://windhorsetrek.com/userfiles/files/admin-hack-any-game-roblox-script-pastebin_GM431946152.pdfIn PDF document text
- http://windhorsetrek.com/userfiles/files/robux-miner_GM431946152.pdfIn PDF document text
- http://windhorsetrek.com/userfiles/files/coin-master-hack-2021-no-human-verification_GM406889139.pdfIn PDF document text
- http://windhorsetrek.com/userfiles/files/free-robux-accounts-2021_GM431946152.pdfIn PDF document text
- http://windhorsetrek.com/userfiles/files/e-free-on-roblox_GM431946152.pdfIn PDF document text
- http://windhorsetrek.com/userfiles/files/hack-prison-life-roblox-2021-pc-dansploit_GM431946152.pdfIn PDF document text
- http://windhorsetrek.com/userfiles/files/pubg-uc-with-jazz-cash_GM1330123889.pdfIn PDF document text
- http://windhorsetrek.com/userfiles/files/free-roblox-vip-server-for-lab-experiment_GM431946152.pdfIn PDF document text
- http://windhorsetrek.com/userfiles/files/robux-hack-without-downloading-stuff_GM431946152.pdfIn PDF document text
- http://windhorsetrek.com/userfiles/files/coin-master-hack-app-link_GM406889139.pdfIn PDF document text
- http://windhorsetrek.com/userfiles/files/coin-master-hack-2021-apk_GM406889139.pdfIn PDF document text
- http://windhorsetrek.com/userfiles/files/minecraft-apk-114-4_GM479516143.pdfIn PDF document text
- http://windhorsetrek.com/userfiles/files/free-roblox-codes-for-robux-2021_GM431946152.pdfIn PDF document text
- http://windhorsetrek.com/userfiles/files/hack-coin-master-android-game_GM406889139.pdfIn PDF document text
- http://windhorsetrek.com/userfiles/files/roblox-hacks-2021_GM431946152.pdfIn PDF document text
- http://windhorsetrek.com/userfiles/files/minecraft-for-free-games_GM479516143.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
`font_00_sfnt_off00002d38.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2D38	22792 bytes
SHA-256: `5d2ae2a503692676dd50703a3a4887d4583cb9344c0cd37babb0f5fe9507a4f3`
`font_01_sfnt_off0000603d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x603D	19380 bytes
SHA-256: `a452d0c191873ed4d1cd88fa82656ca938fba3e74f496bef56901f9d10460b65`

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