PDF malware analysis — malicious · d1d8fe907d7d3fe6

MALICIOUS

PDF

41.5 KB Created: 2021-05-18 23:48:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16

MD5: 2164ad6892453d1c1265b94b32a23cea SHA-1: fccfd3d16fffb20d5e4852c7bf80c4e43bcc8704 SHA-256: d1d8fe907d7d3fe6ad6544f8a3cdd96d6a70bfca3e014971cfdcb8b385161731

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains a large number of external links, many of which point to files with names suggesting game cheats or hacks. The ML classifier strongly flagged this PDF as malicious, and the presence of a download button lure further supports a malicious intent. The primary goal appears to be directing users to download potentially harmful content from the listed URLs.

Machine Learning

Nyx PDF Classifier malicious score 0.9971

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/coin-master-spin-hack-pc-game-hack PDF link annotation
- https://www.owlweb.co.uk/uploads/files/files/flip-master-free-coins_GM406889139.pdfIn PDF document text
- https://www.owlweb.co.uk/uploads/files/files/minecraft-launcher-download-free_GM479516143.pdfIn PDF document text
- https://www.owlweb.co.uk/uploads/files/files/how-to-hack-to-get-robux_GM431946152.pdfIn PDF document text
- https://www.owlweb.co.uk/uploads/files/files/free-spins-and-coins-coin-master-2021-link_GM406889139.pdfIn PDF document text
- https://www.owlweb.co.uk/uploads/files/files/2021-free-spins-coin-master_GM406889139.pdfIn PDF document text
- https://www.owlweb.co.uk/uploads/files/files/roblox-got-talent-piano-hack_GM431946152.pdfIn PDF document text
- https://www.owlweb.co.uk/uploads/files/files/coin-master-free-spin-redeem-code_GM406889139.pdfIn PDF document text
- https://www.owlweb.co.uk/uploads/files/files/coin-master-free-spins-2021-blogspot_GM406889139.pdfIn PDF document text
- https://www.owlweb.co.uk/uploads/files/files/how-to-get-free-robux-not-a-scam_GM431946152.pdfIn PDF document text
- https://www.owlweb.co.uk/uploads/files/files/coin-master-free-spins-link-no-verification_GM406889139.pdfIn PDF document text
- https://www.owlweb.co.uk/uploads/files/files/coin-master-free-coins-hack_GM406889139.pdfIn PDF document text
- https://www.owlweb.co.uk/uploads/files/files/minecraft-free-play-now_GM479516143.pdfIn PDF document text
- https://www.owlweb.co.uk/uploads/files/files/free-face-roblox_GM431946152.pdfIn PDF document text
- https://www.owlweb.co.uk/uploads/files/files/free-spin-coin-master-link-today_GM406889139.pdfIn PDF document text
- https://www.owlweb.co.uk/uploads/files/files/free-spin-link-for-coin-master-game_GM406889139.pdfIn PDF document text
- https://www.owlweb.co.uk/uploads/files/files/minecraft-handbook_GM479516143.pdfIn PDF document text
- https://www.owlweb.co.uk/uploads/files/files/how-to-hack-people-in-roblox_GM431946152.pdfIn PDF document text
- https://www.owlweb.co.uk/uploads/files/files/coin-master-free-cards-link_GM406889139.pdfIn PDF document text
- https://www.owlweb.co.uk/uploads/files/files/free-roblox-accounts-that-work_GM431946152.pdfIn PDF document text
- https://www.owlweb.co.uk/uploads/files/files/how-to-hack-coin-master-with-game-guardian_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
`stream_003_off000047b0.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x47B0	25448 bytes
SHA-256: `fecdad8a7a57f0dfca933ee6f3a3cc3cd98ad31cebbd994e402fdefa2c7d12ba`
`font_01_sfnt_off000080a9.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x80A9	18048 bytes
SHA-256: `56a65f50714ecbd9049d616bfb273726bba74de2c3cbe29be5745e4fcfc85992`

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