PDF malware analysis — malicious · fd16ca8a64ac61cc

MALICIOUS

PDF

42.1 KB Created: 2021-05-13 04:52:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-26

MD5: 714b3f0f0d5d51c65fa49e67148d09ca SHA-1: d6f39dbf2d78c4a857ae41fab66d9bf87dc9a6de SHA-256: fd16ca8a64ac61cc82a184b0753f0cab4da72f212f0c28d2e4fd1f4ccb93b59f

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious infrastructure, specifically advertising 'free generator / game hack' lures. The embedded URLs are designed to trick users into clicking, likely leading to further malware downloads or phishing pages. The ML classifier also strongly indicated maliciousness.

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/free-spins-coin-master-2021-glitch-game-hack In PDF document text
- https://www.multilandtours.com/assets/ckfinder/userfiles/files/how-to-get-free-robux-easy-on-phone_GM431946152.pdfIn PDF document text
- https://www.multilandtours.com/assets/ckfinder/userfiles/files/roblox-hack-ga_GM431946152.pdfIn PDF document text
- https://www.multilandtours.com/assets/ckfinder/userfiles/files/robux-hack_GM431946152.pdfIn PDF document text
- https://www.multilandtours.com/assets/ckfinder/userfiles/files/how-do-you-hack-roblox_GM431946152.pdfIn PDF document text
- https://www.multilandtours.com/assets/ckfinder/userfiles/files/free-coins-and-spins-coin-master_GM406889139.pdfIn PDF document text
- https://www.multilandtours.com/assets/ckfinder/userfiles/files/coin-master-free-gold-cards-link-2021_GM406889139.pdfIn PDF document text
- https://www.multilandtours.com/assets/ckfinder/userfiles/files/free-robux-safe_GM431946152.pdfIn PDF document text
- https://www.multilandtours.com/assets/ckfinder/userfiles/files/ways-to-earn-robux_GM431946152.pdfIn PDF document text
- https://www.multilandtours.com/assets/ckfinder/userfiles/files/robux-com-free-robux_GM431946152.pdfIn PDF document text
- https://www.multilandtours.com/assets/ckfinder/userfiles/files/can-you-give-me-free-robux_GM431946152.pdfIn PDF document text
- https://www.multilandtours.com/assets/ckfinder/userfiles/files/minecraft-coins-free_GM479516143.pdfIn PDF document text
- https://www.multilandtours.com/assets/ckfinder/userfiles/files/coin-master-33-hack-version-download_GM406889139.pdfIn PDF document text
- https://www.multilandtours.com/assets/ckfinder/userfiles/files/coin-master-unlimited-spins-hack_GM406889139.pdfIn PDF document text
- https://www.multilandtours.com/assets/ckfinder/userfiles/files/hacks-for-coin-master_GM406889139.pdfIn PDF document text
- https://www.multilandtours.com/assets/ckfinder/userfiles/files/free-spin-gratis-coin-master_GM406889139.pdfIn PDF document text
- https://www.multilandtours.com/assets/ckfinder/userfiles/files/can-you-still-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
- https://www.multilandtours.com/assets/ckfinder/userfiles/files/free-roblox-boy-hair_GM431946152.pdfIn PDF document text
- https://www.multilandtours.com/assets/ckfinder/userfiles/files/free-custom-minecraft-skins_GM479516143.pdfIn PDF document text
- https://www.multilandtours.com/assets/ckfinder/userfiles/files/roblox-free-robux_GM431946152.pdfIn PDF document text
- https://www.multilandtours.com/assets/ckfinder/userfiles/files/how-to-get-free-pet-snacks-in-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_003_off0000492d.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x492D	24624 bytes
SHA-256: `4a04754f8f89b9b04ebcb1f610f768f4ebc932a9131f91115e93ddbd88aaa3e1`
`font_01_sfnt_off00008190.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8190	18528 bytes
SHA-256: `8c6d4bd1280aaca7551541ea66dfc454f80fb022d039b81e2f7b76bbe9834590`

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