PDF malware analysis — malicious · 4d60cd258b1a57fb

MALICIOUS

PDF

36.1 KB Created: 2021-07-09 05:37:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: eff8340b2cf38297ab7565f1d09a9a71 SHA-1: 6e8c71cd2d7134f0d940363abde991e5aa29f74d SHA-256: 4d60cd258b1a57fb254f8ee1a0e327c50e5d64b45fb94bd0ebe8ec825a65b453

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.tw/app/406889139/daily-spin-coin-master-free-game-hack PDF link annotation
- https://surpetgarut-tmcollection.com/ckfinder/userfiles/files/como-conseguir-robux-sin-hacks_GM431946152.pdfIn PDF document text
- https://surpetgarut-tmcollection.com/ckfinder/userfiles/files/coin-master-free-coins-link-2021_GM406889139.pdfIn PDF document text
- https://surpetgarut-tmcollection.com/ckfinder/userfiles/files/hack-robloxcom-robux_GM431946152.pdfIn PDF document text
- https://surpetgarut-tmcollection.com/ckfinder/userfiles/files/thebuxian-new-roblox-animation-gives-free-robux_GM431946152.pdfIn PDF document text
- https://surpetgarut-tmcollection.com/ckfinder/userfiles/files/robux-free-72-claim_GM431946152.pdfIn PDF document text
- https://surpetgarut-tmcollection.com/ckfinder/userfiles/files/how-to-hack-coin-master-with-lucky-patcher_GM406889139.pdfIn PDF document text
- https://surpetgarut-tmcollection.com/ckfinder/userfiles/files/free-cracked-minecraft-server-hosting_GM479516143.pdfIn PDF document text
- https://surpetgarut-tmcollection.com/ckfinder/userfiles/files/free-things-on-roblox_GM431946152.pdfIn PDF document text
- https://surpetgarut-tmcollection.com/ckfinder/userfiles/files/my-robux_GM431946152.pdfIn PDF document text
- https://surpetgarut-tmcollection.com/ckfinder/userfiles/files/i-didnt-get-my-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
- https://surpetgarut-tmcollection.com/ckfinder/userfiles/files/blogspot-coin-master-spins_GM406889139.pdfIn PDF document text
- https://surpetgarut-tmcollection.com/ckfinder/userfiles/files/how-do-u-hack-roblox_GM431946152.pdfIn PDF document text
- https://surpetgarut-tmcollection.com/ckfinder/userfiles/files/coin-master-free-snacks-link_GM406889139.pdfIn PDF document text
- https://surpetgarut-tmcollection.com/ckfinder/userfiles/files/coin-master-hack-tool-for-pc_GM406889139.pdfIn PDF document text
- https://surpetgarut-tmcollection.com/ckfinder/userfiles/files/coin-master-hack-mod_GM406889139.pdfIn PDF document text
- https://surpetgarut-tmcollection.com/ckfinder/userfiles/files/free-roblox-printable_GM431946152.pdfIn PDF document text
- https://surpetgarut-tmcollection.com/ckfinder/userfiles/files/roblox-zone-free-robux_GM431946152.pdfIn PDF document text
- https://surpetgarut-tmcollection.com/ckfinder/userfiles/files/coin-master-free-spins-generator_GM406889139.pdfIn PDF document text
- https://surpetgarut-tmcollection.com/ckfinder/userfiles/files/coin-master-free-spins-link-fb_GM406889139.pdfIn PDF document text
- https://surpetgarut-tmcollection.com/ckfinder/userfiles/files/coin-master-hack-355_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
`font_00_sfnt_off0000348b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x348B	23460 bytes
SHA-256: `1cd00a6a6581c0dedff5aad88c6bc92bc150bfc6d54350298483a9c950450bfd`
`font_01_sfnt_off0000699b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x699B	18596 bytes
SHA-256: `dd2b15a0c253a0bf9d7b51e6ea282b6de13fefca925d00b562789186b018f21c`

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