PDF malware analysis — malicious · 292e60667d29dd69

MALICIOUS

PDF

35.3 KB Created: 2021-06-19 12:58:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16

MD5: 3c9b330fe187ac76fc108b09f2cc0ee7 SHA-1: 577f4de2b6de341f06f3209e0b31172c522527c7 SHA-256: 292e60667d29dd69df8fa81269b0d144ef4ecbab2fb85a31daf46a979725c366

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains numerous embedded URLs and a prominent call-to-action in its body text, directing users to download free in-game currency. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, suggesting a link farm designed to attract users searching for cheats or hacks. The ML classifier also flagged this PDF as malicious with high confidence.

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/free-robux-no-human-verification-on-ipad-game-hack PDF link annotation
- https://www.ruchya.com.tw/upload/files/coin-master-free-link-spin_GM406889139.pdfIn PDF document text
- https://www.ruchya.com.tw/upload/files/roblox-robux-hack-2021_GM431946152.pdfIn PDF document text
- https://www.ruchya.com.tw/upload/files/coin-master-daily-free-spins-2021_GM406889139.pdfIn PDF document text
- https://www.ruchya.com.tw/upload/files/how-to-hack-roblox-accounts_GM431946152.pdfIn PDF document text
- https://www.ruchya.com.tw/upload/files/free-robux-with-no-verification-2021_GM431946152.pdfIn PDF document text
- https://www.ruchya.com.tw/upload/files/hown-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://www.ruchya.com.tw/upload/files/which-group-has-free-admin-on-roblox_GM431946152.pdfIn PDF document text
- https://www.ruchya.com.tw/upload/files/minecraft-free-android_GM479516143.pdfIn PDF document text
- https://www.ruchya.com.tw/upload/files/coin-master-heaven-free-spins-and-coins_GM406889139.pdfIn PDF document text
- https://www.ruchya.com.tw/upload/files/robux-free-com_GM431946152.pdfIn PDF document text
- https://www.ruchya.com.tw/upload/files/free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
- https://www.ruchya.com.tw/upload/files/coin-master-free-coins-hack_GM406889139.pdfIn PDF document text
- https://www.ruchya.com.tw/upload/files/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
- https://www.ruchya.com.tw/upload/files/how-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
- https://www.ruchya.com.tw/upload/files/coin-master-hacks-no-human-verification_GM406889139.pdfIn PDF document text
- https://www.ruchya.com.tw/upload/files/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
- https://www.ruchya.com.tw/upload/files/free-robux-please_GM431946152.pdfIn PDF document text
- https://www.ruchya.com.tw/upload/files/roblox-promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
- https://www.ruchya.com.tw/upload/files/game-coin-master-hack_GM406889139.pdfIn PDF document text
- https://www.ruchya.com.tw/upload/files/hack-coin-master-apk-32-download_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
`font_00_sfnt_off00003023.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3023	22940 bytes
SHA-256: `4014aabdbe7a23f59e4431198d2869b7c1879becc0d31bedf46f474fa38f706c`
`font_01_sfnt_off00006321.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6321	19684 bytes
SHA-256: `0d9213b242120c63e49e88ff534e0eecf49043567e3f064e2d96c8fec4c6f7c0`

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