PDF malware analysis — malicious · e4c6d0069e523386

MALICIOUS

PDF

42.7 KB Created: 2021-05-19 01:31:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18

MD5: dcccb819d7d086e479c298c4b5b1b99c SHA-1: a9e38718f10814af40717924a8c7f66b844de94a SHA-256: e4c6d0069e523386c06d504a9aeba147d2a175decff89dd2bc40fb7e7d5bee93

142 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document contains numerous links, identified as a link farm, designed to lure users to external websites. The primary lure appears to be related to game hacks and free spins for games like Coin Master and Robux generators. The ML classifier strongly indicates maliciousness, and the PDF structure with embedded URIs supports a phishing or scamming attack pattern.

Machine Learning

Nyx PDF Classifier malicious score 0.9971

Heuristics 5

Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM

Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
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/moonactive-coin-master-free-spins-link-game-hack PDF link annotation
- https://www.trendsfashionusa.com/uploaded_files/userfiles/files/how-to-get-free-robux-without-any-verification_GM431946152.pdfIn PDF document text
- https://www.trendsfashionusa.com/uploaded_files/userfiles/files/free-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
- https://www.trendsfashionusa.com/uploaded_files/userfiles/files/free-coins-coin-master-iphone_GM406889139.pdfIn PDF document text
- https://www.trendsfashionusa.com/uploaded_files/userfiles/files/how-do-you-get-free-robux-2021_GM431946152.pdfIn PDF document text
- https://www.trendsfashionusa.com/uploaded_files/userfiles/files/coin-master-spins-2021_GM406889139.pdfIn PDF document text
- https://www.trendsfashionusa.com/uploaded_files/userfiles/files/coin-master-free-spins-and-cards_GM406889139.pdfIn PDF document text
- https://www.trendsfashionusa.com/uploaded_files/userfiles/files/coin-master-hack-online-android_GM406889139.pdfIn PDF document text
- https://www.trendsfashionusa.com/uploaded_files/userfiles/files/100-robux_GM431946152.pdfIn PDF document text
- https://www.trendsfashionusa.com/uploaded_files/userfiles/files/minecraft-svg-free_GM479516143.pdfIn PDF document text
- https://www.trendsfashionusa.com/uploaded_files/userfiles/files/how-do-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
- https://www.trendsfashionusa.com/uploaded_files/userfiles/files/what-is-a-minecraft-client_GM479516143.pdfIn PDF document text
- https://www.trendsfashionusa.com/uploaded_files/userfiles/files/how-to-hack-to-get-robux_GM431946152.pdfIn PDF document text
- https://www.trendsfashionusa.com/uploaded_files/userfiles/files/wurst-client-18-9_GM479516143.pdfIn PDF document text
- https://www.trendsfashionusa.com/uploaded_files/userfiles/files/coin-master-free-spin-now_GM406889139.pdfIn PDF document text
- https://www.trendsfashionusa.com/uploaded_files/userfiles/files/roblox-play-as-guest-free_GM431946152.pdfIn PDF document text
- https://www.trendsfashionusa.com/uploaded_files/userfiles/files/roblox-robux_GM431946152.pdfIn PDF document text
- https://www.trendsfashionusa.com/uploaded_files/userfiles/files/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
- https://www.trendsfashionusa.com/uploaded_files/userfiles/files/minecraft-hacks-pc_GM479516143.pdfIn PDF document text
- https://www.trendsfashionusa.com/uploaded_files/userfiles/files/roblox-mobile-hack_GM431946152.pdfIn PDF document text
- https://www.trendsfashionusa.com/uploaded_files/userfiles/files/coin-master-unlimited-spin-and-coin-hack_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_off00004acc.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4ACC	25628 bytes
SHA-256: `764e6f9b53ab385d04f5d43de3760bbf9219a58331e9ee28b907d4896106a24d`
`font_01_sfnt_off00008517.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8517	18168 bytes
SHA-256: `5140a57a6990af64b86c6fc328de463115c3f290c56e1373822c3feaa5dc4a97`

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