PDF malware analysis — malicious · fa5a0f1147f47c20

MALICIOUS

PDF

46.1 KB Created: 2021-06-03 21:07:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07

MD5: f19127042c128d8b5596876a3330fde3 SHA-1: 97b095213b8fd2d95b1b1ecb0b0d8a8dc04c7730 SHA-256: fa5a0f1147f47c204f716d70c9c84d072fb3cff123c15d548ee21821be6f0fd9

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains a lure for a game hack, directing users to a suspicious URL. This URL, along with numerous others found in the document, likely serves as a landing page for malware distribution or phishing. The ML classifier also flagged this PDF as malicious, supporting the assessment of a malicious intent.

Machine Learning

Nyx PDF Classifier malicious score 0.9797

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/406889139/coin-master-hack-cheat-engine-game-hack PDF link annotation
- https://kojak-group.com/userfiles/files/free-minecraft-mods-for-xbox-one_GM479516143.pdfIn PDF document text
- https://kojak-group.com/userfiles/files/best-roblox-hacks_GM431946152.pdfIn PDF document text
- https://kojak-group.com/userfiles/files/wurst-minecraft_GM479516143.pdfIn PDF document text
- https://kojak-group.com/userfiles/files/free-coin-master-coins_GM406889139.pdfIn PDF document text
- https://kojak-group.com/userfiles/files/rbxcity-free-robux_GM431946152.pdfIn PDF document text
- https://kojak-group.com/userfiles/files/minecraft-thumbnail-maker-free_GM479516143.pdfIn PDF document text
- https://kojak-group.com/userfiles/files/bloxpage-free-robux_GM431946152.pdfIn PDF document text
- https://kojak-group.com/userfiles/files/coin-master-3533-android-hack_GM406889139.pdfIn PDF document text
- https://kojak-group.com/userfiles/files/free-roblox-clothes-boy_GM431946152.pdfIn PDF document text
- https://kojak-group.com/userfiles/files/coin-master-free-spin-link-today-2021_GM406889139.pdfIn PDF document text
- https://kojak-group.com/userfiles/files/hack-coin-master-online-without-human-verification_GM406889139.pdfIn PDF document text
- https://kojak-group.com/userfiles/files/coin-master-hack-online_GM406889139.pdfIn PDF document text
- https://kojak-group.com/userfiles/files/get-robux-com_GM431946152.pdfIn PDF document text
- https://kojak-group.com/userfiles/files/minecraft-free-version_GM479516143.pdfIn PDF document text
- https://kojak-group.com/userfiles/files/how-to-change-username-on-roblox-for-free_GM431946152.pdfIn PDF document text
- https://kojak-group.com/userfiles/files/coin-master-free-spins-link-today-facebook_GM406889139.pdfIn PDF document text
- https://kojak-group.com/userfiles/files/roblox-free-robux-codes_GM431946152.pdfIn PDF document text
- https://kojak-group.com/userfiles/files/how-to-get-free-robux-for-free_GM431946152.pdfIn PDF document text
- https://kojak-group.com/userfiles/files/coin-master-game-free-download_GM406889139.pdfIn PDF document text
- https://kojak-group.com/userfiles/files/is-minecraft-free-on-xbox_GM479516143.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_004_off00004fb7.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4FB7	24364 bytes
SHA-256: `756db5ab1039c65f6cc0672a793d8676c28a9aa788aec1c4f162533d5d68d8e2`
`font_01_sfnt_off00008788.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8788	2880 bytes
SHA-256: `10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132`
`font_02_sfnt_off00009173.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9173	18172 bytes
SHA-256: `e3f41997ae9b51af751d949b3a003807251391f9a40890f8515a7dcb8e6b4f46`

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