PDF malware analysis — malicious · 609b712b7ca6a194

MALICIOUS

PDF

35.5 KB Created: 2021-07-07 00:46:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05

MD5: 5f573b256f2c8b1a022bce463d34d65e SHA-1: 66ed041c4a273efaa2880c828bc81fbbbf6689c1 SHA-256: 609b712b7ca6a194f246346d566c0bac43cd68d6496423c3c003d2c541d808fa

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains multiple links to external websites, with a primary focus on 'free generator / game hack' lures. The document body explicitly mentions 'Free Spins And Coins Coin Master 2021 Link' and directs to http://netcdn.tw/app/406889139/free-spins-and-coins-coin-master-2021-link-game-hack, indicating a likely phishing or malware distribution attempt. No scripts were extracted, but the overall structure and content strongly suggest a social engineering attack.

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.tw/app/406889139/free-spins-and-coins-coin-master-2021-link-game-hack PDF link annotation
- http://www.pustakaekspresi.com/new/public/ckfinder/userfiles/files/how-to-get-free-coins-on-tiktok_GM835599320.pdfIn PDF document text
- http://www.pustakaekspresi.com/new/public/ckfinder/userfiles/files/roblox-character-hack_GM431946152.pdfIn PDF document text
- http://www.pustakaekspresi.com/new/public/ckfinder/userfiles/files/free-100-robux_GM431946152.pdfIn PDF document text
- http://www.pustakaekspresi.com/new/public/ckfinder/userfiles/files/free-roblox-script-corrector_GM431946152.pdfIn PDF document text
- http://www.pustakaekspresi.com/new/public/ckfinder/userfiles/files/old-roblox-accounts-for-free_GM431946152.pdfIn PDF document text
- http://www.pustakaekspresi.com/new/public/ckfinder/userfiles/files/pokemon-go-free-year_GM1094591345.pdfIn PDF document text
- http://www.pustakaekspresi.com/new/public/ckfinder/userfiles/files/free-roblox-toy-codes-generator_GM431946152.pdfIn PDF document text
- http://www.pustakaekspresi.com/new/public/ckfinder/userfiles/files/minecraft-education-edition-free-download_GM479516143.pdfIn PDF document text
- http://www.pustakaekspresi.com/new/public/ckfinder/userfiles/files/roblox-download-free-for-pc-full-game_GM431946152.pdfIn PDF document text
- http://www.pustakaekspresi.com/new/public/ckfinder/userfiles/files/coin-master-free-online-game_GM406889139.pdfIn PDF document text
- http://www.pustakaekspresi.com/new/public/ckfinder/userfiles/files/minecraft-java-edition-free_GM479516143.pdfIn PDF document text
- http://www.pustakaekspresi.com/new/public/ckfinder/userfiles/files/building-simulator-cheat-codes-roblox_GM431946152.pdfIn PDF document text
- http://www.pustakaekspresi.com/new/public/ckfinder/userfiles/files/how-to-get-minecraft-for-free_GM479516143.pdfIn PDF document text
- http://www.pustakaekspresi.com/new/public/ckfinder/userfiles/files/ldshadowlady-roblox-someone-hacked-my-acount_GM431946152.pdfIn PDF document text
- http://www.pustakaekspresi.com/new/public/ckfinder/userfiles/files/how-to-get-minecraft-bedrock-for-free_GM479516143.pdfIn PDF document text
- http://www.pustakaekspresi.com/new/public/ckfinder/userfiles/files/codes-how-to-get-free-robux_GM431946152.pdfIn PDF document text
- http://www.pustakaekspresi.com/new/public/ckfinder/userfiles/files/how-to-get-free-admin-in-roblox-on-all-games_GM431946152.pdfIn PDF document text
- http://www.pustakaekspresi.com/new/public/ckfinder/userfiles/files/how-to-hack-pet-simulator-roblox_GM431946152.pdfIn PDF document text
- http://www.pustakaekspresi.com/new/public/ckfinder/userfiles/files/free-robux-offers_GM431946152.pdfIn PDF document text
- http://www.pustakaekspresi.com/new/public/ckfinder/userfiles/files/50-free-spins-coin-master_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_002_off000032be.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x32BE	22872 bytes
SHA-256: `84fd0064b927c2b5e6ad9d51825ebd7ef0bf8e7ec2997ae7d6d06bdf75a841c6`
`font_01_sfnt_off0000661f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x661F	18920 bytes
SHA-256: `5da8567ac5cad1a9e8b19f4308895a295b9244689bea2bda45786747592bc9c5`

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