PDF malware analysis — malicious · 00e7a191a3b96c39

MALICIOUS

PDF

35.7 KB Created: 2021-06-30 13:51:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27

MD5: d1105ae6e42eeb106ab50ea86e2fc356 SHA-1: 854967e1247f3b6cdd71a11e8f13f4e406df48b6 SHA-256: 00e7a191a3b96c39dd4fcd87df5b54abaf1afc62c75d8bcb3ccaac0bc92c8516

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 document body that promotes free in-game currency and hacks for popular games. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, suggesting a link farm designed to attract users. The ML classifier also flagged this PDF as malicious with high confidence. The primary attack pattern involves luring users to click on these links, likely leading to malware downloads or phishing sites.

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/how-to-make-a-group-for-free-on-roblox-game-hack PDF link annotation
- https://www.nordicstar.co.uk/uploads/files/files/free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/free-robux-legit-2021_GM431946152.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/free-spin-hack-coin-master-2021_GM406889139.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/how-to-hack-anyone-on-roblox-2021_GM431946152.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/how-to-hack-roblox-games-on-ipad_GM431946152.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/roblox-bloxburg-money-hack-2021_GM431946152.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/roblox-hack-tool-robux-and-tickets-download_GM431946152.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/how-to-get-free-robux-2021-no-hack_GM431946152.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/how-to-get-free-robux-using-hackbar-extension_GM431946152.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/earn-roblox_GM431946152.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/roblox-hack-unlimited-robux_GM431946152.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/hack-coin-master-spin_GM406889139.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/how-to-get-free-outrageous-and-robux-earrapr_GM431946152.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/coin-master-free-spin-no-offers_GM406889139.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/roblox-bubble-gum-sim-free-pet_GM431946152.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/roblox-bux-cheats_GM431946152.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/free-robux-generator-2021-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/link-for-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/free-roblox-accounts-2021-with-obc_GM431946152.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/roblox-free-exploit-executor_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_off00003240.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x3240	22824 bytes
SHA-256: `2cc39877c9574f9adec3179af4dde466efaf8cae17e03674ea6c8c8cef98a498`
`font_01_sfnt_off00006578.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6578	19496 bytes
SHA-256: `eb23912c5a3d267887cdbce7813cc79b54c49a38d777c4de9464d147942f9787`

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