PDF malware analysis — malicious · 5cea6b345eb8de24

MALICIOUS

PDF

33.7 KB Created: 2021-06-25 15:02:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15

MD5: 54f5b68fe4f274ff102a02d0f450faaa SHA-1: 0fd5f378b1c272a79bff0199122050645aa8cae6 SHA-256: 5cea6b345eb8de246a2bf00d53e747bba479309a992f937cf9c6b8a9e7d7d7b1

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious File

The PDF document contains numerous embedded links, many of which are part of a link farm, directing users to download-related content for games like Roblox and Coin Master. The ML classifier strongly flagged this PDF as malicious, and the presence of external URIs and a link farm indicates a high likelihood of leading users to malicious downloads or phishing sites. No scripts were extracted from this sample.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

Heuristics 4

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
External URI info PDF_URI

PDF contains an external URL action
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/dl-roblox-hack-game-hack PDF link annotation
- https://knowledgekingdom.com.jo/aidata/blanc/files/roblox-hack-no-human-verification-ios_GM431946152.pdfIn PDF document text
- https://knowledgekingdom.com.jo/aidata/blanc/files/free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
- https://knowledgekingdom.com.jo/aidata/blanc/files/minecraft-free-download-ios_GM479516143.pdfIn PDF document text
- https://knowledgekingdom.com.jo/aidata/blanc/files/new-roblox-exploit-wizard-simulator-hack-god-mode-autoattack-1mp4_GM431946152.pdfIn PDF document text
- https://knowledgekingdom.com.jo/aidata/blanc/files/free-coins-and-spins-coin-master_GM406889139.pdfIn PDF document text
- https://knowledgekingdom.com.jo/aidata/blanc/files/coin-master-free-cards_GM406889139.pdfIn PDF document text
- https://knowledgekingdom.com.jo/aidata/blanc/files/coin-master-hack-iphone_GM406889139.pdfIn PDF document text
- https://knowledgekingdom.com.jo/aidata/blanc/files/how-to-hack-into-someones-roblox-account_GM431946152.pdfIn PDF document text
- https://knowledgekingdom.com.jo/aidata/blanc/files/coin-master-free-spins-link-2021-download_GM406889139.pdfIn PDF document text
- https://knowledgekingdom.com.jo/aidata/blanc/files/roblox-prison-life-v202-hack-download_GM431946152.pdfIn PDF document text
- https://knowledgekingdom.com.jo/aidata/blanc/files/car-spawn-gui-roblox-free_GM431946152.pdfIn PDF document text
- https://knowledgekingdom.com.jo/aidata/blanc/files/how-to-get-your-hacked-roblox-account-back-2021_GM431946152.pdfIn PDF document text
- https://knowledgekingdom.com.jo/aidata/blanc/files/minecraft-pe-free-download-ios-no-jailbreak_GM479516143.pdfIn PDF document text
- https://knowledgekingdom.com.jo/aidata/blanc/files/free-robux-codes-no-survey-2021_GM431946152.pdfIn PDF document text
- https://knowledgekingdom.com.jo/aidata/blanc/files/roblox-robux-hack_GM431946152.pdfIn PDF document text
- https://knowledgekingdom.com.jo/aidata/blanc/files/free-clothing-items-on-roblox_GM431946152.pdfIn PDF document text
- https://knowledgekingdom.com.jo/aidata/blanc/files/how-to-hack-a-minecraft-server_GM479516143.pdfIn PDF document text
- https://knowledgekingdom.com.jo/aidata/blanc/files/free-robux-no-email_GM431946152.pdfIn PDF document text
- https://knowledgekingdom.com.jo/aidata/blanc/files/coin-master-haktuts_GM406889139.pdfIn PDF document text
- https://knowledgekingdom.com.jo/aidata/blanc/files/city-life-man-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_off00002ddb.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2DDB	22132 bytes
SHA-256: `20058a47299ac3ff47bc2f02ab1ba63787ffa7000c957e41d845a2a1bd9ea3aa`
`font_01_sfnt_off00005f14.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5F14	18824 bytes
SHA-256: `f74cc958704ec786541a87fd50953be63b66b7574e150f808c70ee814b2b6a47`

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