PDF malware analysis — malicious · 2409a110236e9932

MALICIOUS

PDF

34.5 KB Created: 2021-06-30 06:47:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-11

MD5: 450e7e45527e81fbc326ad2cef15c777 SHA-1: 98c42af56eaaaaa320291cde4a38db583031ebc1 SHA-256: 2409a110236e99328359adca20e37b1a96b45cf945106fce4f0e3dc421f4aa3c

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document is designed as a lure, presenting itself as a 'Robux Hack' to entice users to click on a malicious link. The embedded URL `http://netcdn.co/app/431946152/robux-hack-v1-0-game-hack` is identified as a known malicious redirector, indicating a probable attempt to lead the user to a phishing or malware download site. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly suggest a malicious intent to redirect users to harmful content.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/robux-hack-v1-0-game-hack In PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/fly-hacks-for-roblox-2021_GM431946152.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/treasure-hunt-hack-roblox_GM431946152.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/how-to-hack-knifes-in-assassin-roblox_GM431946152.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/free-full-colour-brown-pant-roblox_GM431946152.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/free-valid-roblox-promocodes_GM431946152.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/autospin-hack-roblox_GM431946152.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/how-to-hack-other-people-roblox-accoubt_GM431946152.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/what-is-the-april-1st-stickmasterluke-hack-face-roblox-called_GM431946152.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/free-robux-without-offers_GM431946152.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/roblox-com-free-robux_GM431946152.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/free-games-like-minecraft_GM479516143.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/minecraft-mobile-free_GM479516143.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/how-to-get-free-robux-no-verification_GM431946152.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/fake-hacker-on-roblox_GM431946152.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/coin-master-free-spins-and-coins-today-gift-reward_GM406889139.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/roblox-mobile-hack_GM431946152.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/coin-master-daily-free-spins_GM406889139.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/free-robux-need-password_GM431946152.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/medieval-hood-of-mystery-roblox-free_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
`font_00_sfnt_off00002f8e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2F8E	22392 bytes
SHA-256: `1c5cd71765c83b60854ecd26a6efa2df239d2ebe15618ecf1915d341719431ae`
`font_01_sfnt_off00006157.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6157	19132 bytes
SHA-256: `4c9faf99392185bdfa8609035c3546da95fe12640dd791e14ef1e6107d9e842b`

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