PDF malware analysis — malicious · f886f086264e3b8c

MALICIOUS

PDF

36.1 KB Created: 2021-06-19 00:26:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24

MD5: 0a6854635c74948097d990d0aebb5148 SHA-1: 3979b1b274664ec139fd3bcdb6754f7f617b6ecf SHA-256: f886f086264e3b8c81c60acbf5ac9e5abfeff98613d79c72d1370a6efbeb024a

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which point to external PDF files hosted on a link farm. One of the primary links, http://netcdn.co/app/431946152/get.bucks-roblox-free-game-hack, is identified as a malicious redirector. The document body and heuristics suggest a lure for free game items or currency, indicating a phishing or scam attempt designed to lead users to malicious infrastructure.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

Heuristics 4

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.
Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM

Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
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/get.bucks-roblox-free-game-hack In PDF document text
- http://www.onusgroup.co.in/uploaded_files/userfiles/files/free-robux-for-kids_GM431946152.pdfIn PDF document text
- http://www.onusgroup.co.in/uploaded_files/userfiles/files/coin-master-daily-spin-free_GM406889139.pdfIn PDF document text
- http://www.onusgroup.co.in/uploaded_files/userfiles/files/how-to-get-roblox-premium-for-free-2021_GM431946152.pdfIn PDF document text
- http://www.onusgroup.co.in/uploaded_files/userfiles/files/free-daily-spins-coin-master-2021_GM406889139.pdfIn PDF document text
- http://www.onusgroup.co.in/uploaded_files/userfiles/files/mcmaster-club-coin-master-hack_GM406889139.pdfIn PDF document text
- http://www.onusgroup.co.in/uploaded_files/userfiles/files/get-robux-for-free-2021_GM431946152.pdfIn PDF document text
- http://www.onusgroup.co.in/uploaded_files/userfiles/files/are-tiktok-free-views-without-verification_GM835599320.pdfIn PDF document text
- http://www.onusgroup.co.in/uploaded_files/userfiles/files/coin-master-hack-apk-2021-ios_GM406889139.pdfIn PDF document text
- http://www.onusgroup.co.in/uploaded_files/userfiles/files/minecraft-pocket-edition-download-free-pe-calculator_GM479516143.pdfIn PDF document text
- http://www.onusgroup.co.in/uploaded_files/userfiles/files/minecraft-linux-free_GM479516143.pdfIn PDF document text
- http://www.onusgroup.co.in/uploaded_files/userfiles/files/coin-master-free-spins-for-today_GM406889139.pdfIn PDF document text
- http://www.onusgroup.co.in/uploaded_files/userfiles/files/coin-master-free-spins-link-march-2021_GM406889139.pdfIn PDF document text
- http://www.onusgroup.co.in/uploaded_files/userfiles/files/hack-coin-master-apk-ios_GM406889139.pdfIn PDF document text
- http://www.onusgroup.co.in/uploaded_files/userfiles/files/free-robux-codes-2021-not-used_GM431946152.pdfIn PDF document text
- http://www.onusgroup.co.in/uploaded_files/userfiles/files/roblox-how-to-hack-robux-with-inspect-element_GM431946152.pdfIn PDF document text
- http://www.onusgroup.co.in/uploaded_files/userfiles/files/how-to-earn-robux-for-free-2021_GM431946152.pdfIn PDF document text
- http://www.onusgroup.co.in/uploaded_files/userfiles/files/free-robux-no-scam_GM431946152.pdfIn PDF document text
- http://www.onusgroup.co.in/uploaded_files/userfiles/files/minecraft-hacked-client-bedrock_GM479516143.pdfIn PDF document text
- http://www.onusgroup.co.in/uploaded_files/userfiles/files/coin-master-daily-free-spins-link-2021_GM406889139.pdfIn PDF document text
- http://www.onusgroup.co.in/uploaded_files/userfiles/files/coin-master-free-spins-link-2021-download_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_off00003500.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3500	23004 bytes
SHA-256: `bc78d335243889d239c587552593b806f845961bba51ea59eeb140cf60e78551`
`font_01_sfnt_off000067f2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x67F2	19132 bytes
SHA-256: `2c5a5fa7c7cb78323b78afc36c98e3b13f0ac31b40c9bf51d9e9324903776960`

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