PDF malware analysis — malicious · 776d28b167f1a35d

MALICIOUS

PDF

34.8 KB Created: 2021-06-30 11:16:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-16

MD5: 369bb7a61d7dfc5666b278ddb0f5f461 SHA-1: 51deac592f42d4e7c47d9568406f7b2dcb763d67 SHA-256: 776d28b167f1a35d5c71cdf109125635da7e563ec12408520bd07ce9fee21a1e

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one to a known malicious redirector infrastructure at http://netcdn.co/app/431946152/free-cool-shirt-roblox-game-hack. The document body and embedded links suggest a lure for game-related cheats and items, likely to lead users to a phishing or malware download site. No scripts were extracted, but the presence of malicious links and the ML classifier's high confidence indicate a malicious intent.

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/free-cool-shirt-roblox-game-hack In PDF document text
- https://www.fluidtecheng.com/uploaded_files/userfiles/files/hack-roblox-link-mad-city_GM431946152.pdfIn PDF document text
- https://www.fluidtecheng.com/uploaded_files/userfiles/files/free-2021-roblox-accounts_GM431946152.pdfIn PDF document text
- https://www.fluidtecheng.com/uploaded_files/userfiles/files/how-to-get-free-robux-com_GM431946152.pdfIn PDF document text
- https://www.fluidtecheng.com/uploaded_files/userfiles/files/shirt-roblox-free_GM431946152.pdfIn PDF document text
- https://www.fluidtecheng.com/uploaded_files/userfiles/files/how-to-get-infinite-robux-free_GM431946152.pdfIn PDF document text
- https://www.fluidtecheng.com/uploaded_files/userfiles/files/hack-de-roblox-counter-blox_GM431946152.pdfIn PDF document text
- https://www.fluidtecheng.com/uploaded_files/userfiles/files/free-minecraft-gift-codes_GM479516143.pdfIn PDF document text
- https://www.fluidtecheng.com/uploaded_files/userfiles/files/roblox-cheats-uhrzeit-ndern_GM431946152.pdfIn PDF document text
- https://www.fluidtecheng.com/uploaded_files/userfiles/files/google-roblox-free-stuff_GM431946152.pdfIn PDF document text
- https://www.fluidtecheng.com/uploaded_files/userfiles/files/does-coin-master-hack-work_GM406889139.pdfIn PDF document text
- https://www.fluidtecheng.com/uploaded_files/userfiles/files/free-roblox-accounts-2021_GM431946152.pdfIn PDF document text
- https://www.fluidtecheng.com/uploaded_files/userfiles/files/free-robux-no-verify_GM431946152.pdfIn PDF document text
- https://www.fluidtecheng.com/uploaded_files/userfiles/files/village-4-coin-master_GM406889139.pdfIn PDF document text
- https://www.fluidtecheng.com/uploaded_files/userfiles/files/free-robux-com-2021_GM431946152.pdfIn PDF document text
- https://www.fluidtecheng.com/uploaded_files/userfiles/files/the-quarry-roblox-hacks_GM431946152.pdfIn PDF document text
- https://www.fluidtecheng.com/uploaded_files/userfiles/files/minecraft-launcher-download-free_GM479516143.pdfIn PDF document text
- https://www.fluidtecheng.com/uploaded_files/userfiles/files/coin-master-hack-game-download-mod-apk_GM406889139.pdfIn PDF document text
- https://www.fluidtecheng.com/uploaded_files/userfiles/files/clover-online-roblox-gui-hack_GM431946152.pdfIn PDF document text
- https://www.fluidtecheng.com/uploaded_files/userfiles/files/coin-master-free-spins-16-04-19_GM406889139.pdfIn PDF document text
- https://www.fluidtecheng.com/uploaded_files/userfiles/files/how-to-get-free-headphones-roblox_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_off00003062.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3062	22576 bytes
SHA-256: `f59bff525c979bffe010aa0938322e87c301145c2df195d6a616afce012e16d1`
`font_01_sfnt_off00006316.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6316	19040 bytes
SHA-256: `fe4422dcefb53720fe02cb5708e68e4b2b88268209c9df94597a6332ef0a77a1`

Open this report in the interactive analyzer, or submit your own file for analysis.