PDF malware analysis — malicious · fcddb42d131cffa2

MALICIOUS

PDF

33.8 KB Created: 2021-06-25 19:46:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01

MD5: 31837dda3b0084822c7591ab315cd964 SHA-1: 576306c1feac15e906c81a997426409a0d7b1201 SHA-256: fcddb42d131cffa28d3eb9650211d53c3c99f4e6af989e3e59ade4dd607ff691

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.co/app/431946152/free-robux-tool-game-hack PDF link annotation
- https://www.nara.org.uk/uploads/files/files/coin-master-free-spins-and-coins-blogspot_GM406889139.pdfIn PDF document text
- https://www.nara.org.uk/uploads/files/files/roblox-hack-site_GM431946152.pdfIn PDF document text
- https://www.nara.org.uk/uploads/files/files/rbx-website_GM431946152.pdfIn PDF document text
- https://www.nara.org.uk/uploads/files/files/free-robux-20210_GM431946152.pdfIn PDF document text
- https://www.nara.org.uk/uploads/files/files/coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
- https://www.nara.org.uk/uploads/files/files/password-free-roblox-accounts_GM431946152.pdfIn PDF document text
- https://www.nara.org.uk/uploads/files/files/how-to-get-a-free-minecraft-server_GM479516143.pdfIn PDF document text
- https://www.nara.org.uk/uploads/files/files/free-roblox-gift-card-codes_GM431946152.pdfIn PDF document text
- https://www.nara.org.uk/uploads/files/files/minecraft-free-download-mac_GM479516143.pdfIn PDF document text
- https://www.nara.org.uk/uploads/files/files/free-robux-no-verification-or-survey_GM431946152.pdfIn PDF document text
- https://www.nara.org.uk/uploads/files/files/coin-master-gold-cards-hack-english_GM406889139.pdfIn PDF document text
- https://www.nara.org.uk/uploads/files/files/roblox-hackers-list_GM431946152.pdfIn PDF document text
- https://www.nara.org.uk/uploads/files/files/how-to-get-free-robux-not-a-scam_GM431946152.pdfIn PDF document text
- https://www.nara.org.uk/uploads/files/files/minecraft-pe-free-download-ios_GM479516143.pdfIn PDF document text
- https://www.nara.org.uk/uploads/files/files/coin-master-hack-fast-org_GM406889139.pdfIn PDF document text
- https://www.nara.org.uk/uploads/files/files/coin-and-spin_GM406889139.pdfIn PDF document text
- https://www.nara.org.uk/uploads/files/files/jailbreak-hacks-on-roblox_GM431946152.pdfIn PDF document text
- https://www.nara.org.uk/uploads/files/files/how-to-hack-roblox-to-get-rubuks_GM431946152.pdfIn PDF document text
- https://www.nara.org.uk/uploads/files/files/roblox-dragon-ball-final-stand-cheat_GM431946152.pdfIn PDF document text
- https://www.nara.org.uk/uploads/files/files/minecraft-on-computer-free_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_off00002e93.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2E93	22336 bytes
SHA-256: `9607678cc1b94deb2ab41417435997cc03d9a6c0b6a6a3ab8d2543367aa6a5e4`
`font_01_sfnt_off00005fc1.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5FC1	18788 bytes
SHA-256: `b4958f0cf3bf63f8a02778feea80d6b50a4208e2c218463aef0d776c8fbf4907`

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