PDF malware analysis — malicious · 5762dd28739ec62a

MALICIOUS

PDF

41.9 KB Created: 2021-05-10 20:31:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20

MD5: 15104e7dc8801e9f25d95f9b2c48c81d SHA-1: 7fe9a9f8ae7d1f7e2be0958351cbccddbd1d830c SHA-256: 5762dd28739ec62a9efd4794bae122d9e4e9e79a1e6cade90500079a17c4e9e8

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains multiple links to a known malicious redirector infrastructure, specifically promoting "Coin Master" hacks. The ML classifier strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the presence of embedded URLs and the lure theme indicate an attempt to redirect the user to malicious content, likely for further exploitation or credential harvesting.

Machine Learning

Nyx PDF Classifier malicious score 0.9971

Heuristics 4

PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK

PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
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
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-hack-tool-access-online-generator-game-hack In PDF document text
- http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/earnrobux_GM431946152.pdfIn PDF document text
- http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/minecraft-pe-hacked-client-download_GM479516143.pdfIn PDF document text
- http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/hacks-for-coin-master-game_GM406889139.pdfIn PDF document text
- http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/coin-master-hacks-iphone_GM406889139.pdfIn PDF document text
- http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/free-coin-master-spins-for-today_GM406889139.pdfIn PDF document text
- http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/free-robux-on-phone_GM431946152.pdfIn PDF document text
- http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/coin-master-daily-bonus-hack_GM406889139.pdfIn PDF document text
- http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/free-robux-apps-that-work_GM431946152.pdfIn PDF document text
- http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/minecraft-handbook_GM479516143.pdfIn PDF document text
- http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/roblox-promo-codes-free-robux_GM431946152.pdfIn PDF document text
- http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
- http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/how-to-hack-coin-master-apple_GM406889139.pdfIn PDF document text
- http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/haktuts-coin-master-hack_GM406889139.pdfIn PDF document text
- http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/minecraft-free-ios_GM479516143.pdfIn PDF document text
- http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/is-it-possible-to-get-free-robux_GM431946152.pdfIn PDF document text
- http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/coin-master-unlimited-spin-link_GM406889139.pdfIn PDF document text
- http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/minecraft-modded-client_GM479516143.pdfIn PDF document text
- http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/but-link-says-free-robux_GM431946152.pdfIn PDF document text
- http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/coin-master-hack-apk-35-13_GM406889139.pdfIn PDF document text
- http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/free-robux-generator-without-human-verification_GM431946152.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_off00004a82.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4A82	24500 bytes
SHA-256: `27f91aaa22fb12afbdbfdf9b51db8c48f38388f7ded0d49c26d3405287d16335`
`font_01_sfnt_off00008304.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8304	17788 bytes
SHA-256: `33ab51800a62a2450932d388ea047aefe8ef17548780c20cda013d20edb28882`

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