PDF malware analysis — malicious · 68cb5e2410bc4ce1

MALICIOUS

PDF

44.5 KB Created: 2021-05-17 12:48:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 0cd5000f02dae44d6f13590e1d8b418b SHA-1: 28360c994e4b573c4a68dd14808b089b550c2508 SHA-256: 68cb5e2410bc4ce18618ff83fa36d3b687bef15484fef27ce7fb33a2da44672c

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded links, identified by the PDF_URI and PDF_SEO_LINK_FARM heuristics, that lead to websites offering 'free' in-game currency and items. The ML classifier also flagged this PDF as malicious. The presence of these links suggests a phishing or scam attempt, likely delivered as a spearphishing attachment, aiming to redirect users to potentially malicious or ad-filled sites.

Machine Learning

Nyx PDF Classifier malicious score 0.9632

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 https://netcdn.xyz/app/406889139/free-daily-coin-master-coins-game-hack
- https://gimnaziya6.kz/images/how-to-get-2021-robux-for-free_GM431946152.pdf
- https://gimnaziya6.kz/images/free-spins-for-coin-master-2021_GM406889139.pdf
- https://gimnaziya6.kz/images/free-coins-and-spins_GM406889139.pdf
- https://gimnaziya6.kz/images/coin-master-70-spin-link-today_GM406889139.pdf
- https://gimnaziya6.kz/images/coin-master-free-spin-link-app_GM406889139.pdf
- https://gimnaziya6.kz/images/roblox-free-executor_GM431946152.pdf
- https://gimnaziya6.kz/images/coin-master-free-spins-2021-ios_GM406889139.pdf
- https://gimnaziya6.kz/images/how-to-hack-someones-roblox-account_GM431946152.pdf
- https://gimnaziya6.kz/images/how-to-get-minecraft-java-for-free_GM479516143.pdf
- https://gimnaziya6.kz/images/coin-master-free-spins-no-survey_GM406889139.pdf
- https://gimnaziya6.kz/images/extra-free-spins-for-coin-master_GM406889139.pdf
- https://gimnaziya6.kz/images/roblox-robux-hack_GM431946152.pdf
- https://gimnaziya6.kz/images/free-robux-generator-no-human-verification_GM431946152.pdf
- https://gimnaziya6.kz/images/rblx-city-free-robux_GM431946152.pdf
- https://gimnaziya6.kz/images/roblox-hack-client_GM431946152.pdf
- https://gimnaziya6.kz/images/coin-master-fan-page-free-spins_GM406889139.pdf
- https://gimnaziya6.kz/images/roblox-hack-tool_GM431946152.pdf
- https://gimnaziya6.kz/images/free-robux-gift-card-codes-2021_GM431946152.pdf
- https://gimnaziya6.kz/images/robux-premium_GM431946152.pdf
- https://gimnaziya6.kz/images/websites-that-give-free-robux_GM431946152.pdf
- http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_003_off00004a64.bin` `87f09a6bea63f0e77e5be057f28d7e067e1261d6afd1095f3d7127bfa795e0a7`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4A64	24628 bytes
`font_01_sfnt_off0000821a.bin` `10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x821A	2880 bytes
`font_02_sfnt_off00008c05.bin` `e8dea5a99271c277603a14108629e17994dae85a84ac1cc22bedd7cafef96884`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8C05	18132 bytes

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