PDF malware analysis — malicious · 2c6c630a60b40dc7

MALICIOUS

PDF

44.0 KB Created: 2021-05-12 16:06:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05

MD5: a35a68535c46a55e00a0bd70a3a21e52 SHA-1: f7b83fbcd4fcbc1ecae3de149ff6e4c38b2eebe2 SHA-256: 2c6c630a60b40dc79d041fab4e08548d417d1470c2c205a1c8d6cb8e0d3f9623

142 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document was flagged as malicious by an ML classifier. It uses a seed-phrase/secret-recovery lure. 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 0.9969

Heuristics 5

Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE

Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
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/406889139/coin-master-2021-free-spins-link-today-game-hack PDF link annotation
- https://www.nordicstar.co.uk/uploads/files/files/how-to-hack-coin-master-computer_GM406889139.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/free-spins-on-coin-master-link_GM406889139.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/coin-master-hack-programers_GM406889139.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/https-iosgodscom-topic-20214coinmasterhack_GM406889139.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/coin-master-hack-app-link_GM406889139.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/minecraft-pe-hack-client_GM479516143.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/easiest-coin-master-hack_GM406889139.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/how-to-get-free-roblox-gift-cards_GM431946152.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/free-robux-generator_GM431946152.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/minecraft-cracked-client_GM479516143.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/coin-master-levels_GM406889139.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/minecraft-hacks-wurst_GM479516143.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/how-to-hack-roblox-2021_GM431946152.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/coin-master-pc-hack-download_GM406889139.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/how-to-make-a-roblox-group-for-free_GM431946152.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/where-can-i-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/hack-coin-master-spin_GM406889139.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/coin-master-apk-hacked-3526_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_003_off00004c3d.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4C3D	25928 bytes
SHA-256: `75ab107392b565f40d03f9285b3c976f61aa8d0d04b5895e1b15d22ec2cdc2af`
`font_01_sfnt_off00008805.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8805	18812 bytes
SHA-256: `1796d469d6688880968d5d589eff493e0f1aaa6a9dd62a8c2503fd741fb93e80`

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