PDF malware analysis — malicious · d498c24c1e90b7cc

MALICIOUS

PDF

35.0 KB Created: 2021-06-25 19:11:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15

MD5: ede6606c8dc9060d85d848a2585f26e2 SHA-1: defffe156a8fc3c2763def4d456b0ee3703133f2 SHA-256: d498c24c1e90b7cc32b37c20eb0c14d16a6b0a550668fe8efdf031aad00ec358

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains numerous embedded URLs and a 'download button' lure, strongly suggesting it is designed to trick users into downloading malicious files. The ML classifier also flagged this PDF with high confidence. The presence of a link farm heuristic further indicates a malicious intent to distribute harmful content.

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/robux-extreme-hack-code-game-hack PDF link annotation
- http://www.riverkennet.org/uploads/files/files/how-to-get-any-free-robux-item_GM431946152.pdfIn PDF document text
- http://www.riverkennet.org/uploads/files/files/unlimited-spin-coin-master-hack_GM406889139.pdfIn PDF document text
- http://www.riverkennet.org/uploads/files/files/unlimited-robux_GM431946152.pdfIn PDF document text
- http://www.riverkennet.org/uploads/files/files/minecraft-apk-114-4_GM479516143.pdfIn PDF document text
- http://www.riverkennet.org/uploads/files/files/minecraft-pe-015-0-apk-free-download_GM479516143.pdfIn PDF document text
- http://www.riverkennet.org/uploads/files/files/get-free-spins-coin-master-link_GM406889139.pdfIn PDF document text
- http://www.riverkennet.org/uploads/files/files/coin-master-hack-tool-v1-9-download-free_GM406889139.pdfIn PDF document text
- http://www.riverkennet.org/uploads/files/files/codes-to-get-free-robux_GM431946152.pdfIn PDF document text
- http://www.riverkennet.org/uploads/files/files/how-to-get-free-robux-without-being-scammed_GM431946152.pdfIn PDF document text
- http://www.riverkennet.org/uploads/files/files/roblox-free-models-viruses-keep-coming-back_GM431946152.pdfIn PDF document text
- http://www.riverkennet.org/uploads/files/files/how-to-get-free-robux-from-khaos_GM431946152.pdfIn PDF document text
- http://www.riverkennet.org/uploads/files/files/coin-master-hack-app_GM406889139.pdfIn PDF document text
- http://www.riverkennet.org/uploads/files/files/how-to-make-a-minecraft-pe-server-for-free_GM479516143.pdfIn PDF document text
- http://www.riverkennet.org/uploads/files/files/robux-app_GM431946152.pdfIn PDF document text
- http://www.riverkennet.org/uploads/files/files/stock-speed-coin-master-free-spins_GM406889139.pdfIn PDF document text
- http://www.riverkennet.org/uploads/files/files/free-robux-hack-real_GM431946152.pdfIn PDF document text
- http://www.riverkennet.org/uploads/files/files/kakashi-roblox-roblox-t-schirts-free_GM431946152.pdfIn PDF document text
- http://www.riverkennet.org/uploads/files/files/coin-master-online-hack-2021_GM406889139.pdfIn PDF document text
- http://www.riverkennet.org/uploads/files/files/minecraft-pe-free-download-ios_GM479516143.pdfIn PDF document text
- http://www.riverkennet.org/uploads/files/files/hacked-msg-for-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
`stream_002_off00002fb4.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x2FB4	22904 bytes
SHA-256: `85c62c53dfba1d4a4c165ea5810353836defb8f3f898e43a4082ae70d3e58b5e`
`font_01_sfnt_off00006338.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6338	19260 bytes
SHA-256: `d289fe81eb36a471d54a123708adae1642c3f902904e17acb42d28895edd175c`

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