PDF malware analysis — malicious · b806da8e83adf6e3

MALICIOUS

PDF

45.9 KB Created: 2021-05-15 08:05:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 4db90af9442be506ebe07d75abeb9e37 SHA-1: 4e2cd7caa155da95f94db9c1c04b42b682c6d172 SHA-256: b806da8e83adf6e3ac04886431824b49b541903af0a5bdfdcfc5b7dc963b3bdb

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 0.9432

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/when-was-minecraft-free-game-hack PDF link annotation
- https://infopromotransvision.com/ckfinder/userfiles/files/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
- https://infopromotransvision.com/ckfinder/userfiles/files/minecraft-for-laptop-free_GM479516143.pdfIn PDF document text
- https://infopromotransvision.com/ckfinder/userfiles/files/coin-master-hack-com_GM406889139.pdfIn PDF document text
- https://infopromotransvision.com/ckfinder/userfiles/files/free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
- https://infopromotransvision.com/ckfinder/userfiles/files/coin-master-free-spins-for-today_GM406889139.pdfIn PDF document text
- https://infopromotransvision.com/ckfinder/userfiles/files/moon-static-coin-master-generator-hacks-free_GM406889139.pdfIn PDF document text
- https://infopromotransvision.com/ckfinder/userfiles/files/roblox-admin-hack_GM431946152.pdfIn PDF document text
- https://infopromotransvision.com/ckfinder/userfiles/files/coin-master-free-coins-no-human-verification_GM406889139.pdfIn PDF document text
- https://infopromotransvision.com/ckfinder/userfiles/files/free-cheat-codes-for-coin-master_GM406889139.pdfIn PDF document text
- https://infopromotransvision.com/ckfinder/userfiles/files/free-robux-generator-for-roblox-2021_GM431946152.pdfIn PDF document text
- https://infopromotransvision.com/ckfinder/userfiles/files/free-coins-coin-master-daily_GM406889139.pdfIn PDF document text
- https://infopromotransvision.com/ckfinder/userfiles/files/hack-to-send-gold-cards-on-coin-master_GM406889139.pdfIn PDF document text
- https://infopromotransvision.com/ckfinder/userfiles/files/coin-master-daily-spin-free_GM406889139.pdfIn PDF document text
- https://infopromotransvision.com/ckfinder/userfiles/files/e-free-roblox_GM431946152.pdfIn PDF document text
- https://infopromotransvision.com/ckfinder/userfiles/files/roblox-arsenal-hacks-download_GM431946152.pdfIn PDF document text
- https://infopromotransvision.com/ckfinder/userfiles/files/how-to-get-minecraft-for-free-on-android_GM479516143.pdfIn PDF document text
- https://infopromotransvision.com/ckfinder/userfiles/files/minecraft-realms-free_GM479516143.pdfIn PDF document text
- https://infopromotransvision.com/ckfinder/userfiles/files/free-robux-promo-codes-2021_GM431946152.pdfIn PDF document text
- https://infopromotransvision.com/ckfinder/userfiles/files/is-minecraft-bedrock-free_GM479516143.pdfIn PDF document text
- https://infopromotransvision.com/ckfinder/userfiles/files/free-roblox-hack-us_GM431946152.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_off00004d9d.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4D9D	25788 bytes
SHA-256: `00ace9e3a09de3bff55332a596139221e5a3d6472b084b48c97c5d13d5295057`
`font_01_sfnt_off00008831.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8831	2940 bytes
SHA-256: `eb230542719c96b42e3fd8bb01e35f13ebd5f02629049da3a58e7fd7607bf48a`
`font_02_sfnt_off00009241.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9241	17932 bytes
SHA-256: `973dc24b982d21c7a26f6b1404f6f01dfc9d6ca8ce5dc51b1335565276afdc72`

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