PDF malware analysis — malicious · c9df2dfdbffe3d24

MALICIOUS

PDF

47.2 KB Created: 2021-05-15 06:37:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27

MD5: bfd9ad063b9f07f805c603ad9456f71d SHA-1: d54fb98fd4e3461e5173831aadf2341e64eecf61 SHA-256: c9df2dfdbffe3d24910cfc127131694f7af17ebf6c3e9ff7008213f4ff226d1b

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document contains numerous external links, many of which point to other PDF files, suggesting a link farm or SEO poisoning tactic. The primary URL and many others are related to 'Coin Master' game hacks, indicating a lure for potentially unwanted or malicious software. The ML classifier also flagged this PDF as malicious.

Machine Learning

Nyx PDF Classifier malicious score 0.8948

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-mod-version-free-download-ios-game-hack PDF link annotation
- https://eagleeyebooks.com/ckfinder/userfiles/files/coin-master-free-spins-link-today-hack_GM406889139.pdfIn PDF document text
- https://eagleeyebooks.com/ckfinder/userfiles/files/coin-master-free-coins--spins_GM406889139.pdfIn PDF document text
- https://eagleeyebooks.com/ckfinder/userfiles/files/safe-hack-for-coin-master-android_GM406889139.pdfIn PDF document text
- https://eagleeyebooks.com/ckfinder/userfiles/files/coin-master-hack-apk-2021-ios_GM406889139.pdfIn PDF document text
- https://eagleeyebooks.com/ckfinder/userfiles/files/minecraft-pe-free-download-ios-no-jailbreak_GM479516143.pdfIn PDF document text
- https://eagleeyebooks.com/ckfinder/userfiles/files/coin-master-hack-cheat-engine_GM406889139.pdfIn PDF document text
- https://eagleeyebooks.com/ckfinder/userfiles/files/coin-master-free-spin-and-coins-links-2021_GM406889139.pdfIn PDF document text
- https://eagleeyebooks.com/ckfinder/userfiles/files/coin-master-gold-cards-free-2021_GM406889139.pdfIn PDF document text
- https://eagleeyebooks.com/ckfinder/userfiles/files/free-robux-website_GM431946152.pdfIn PDF document text
- https://eagleeyebooks.com/ckfinder/userfiles/files/coin-master-heaven-free-spins_GM406889139.pdfIn PDF document text
- https://eagleeyebooks.com/ckfinder/userfiles/files/easy-points-gg_GM431946152.pdfIn PDF document text
- https://eagleeyebooks.com/ckfinder/userfiles/files/free-games-like-minecraft_GM479516143.pdfIn PDF document text
- https://eagleeyebooks.com/ckfinder/userfiles/files/minecraft-pe-free-apk_GM479516143.pdfIn PDF document text
- https://eagleeyebooks.com/ckfinder/userfiles/files/coin-master-game-download-free_GM406889139.pdfIn PDF document text
- https://eagleeyebooks.com/ckfinder/userfiles/files/coin-master-fun-free-spins_GM406889139.pdfIn PDF document text
- https://eagleeyebooks.com/ckfinder/userfiles/files/minecraft-coins-free_GM479516143.pdfIn PDF document text
- https://eagleeyebooks.com/ckfinder/userfiles/files/free-roblox-gfx_GM431946152.pdfIn PDF document text
- https://eagleeyebooks.com/ckfinder/userfiles/files/coin-master-free-coins-2021_GM406889139.pdfIn PDF document text
- https://eagleeyebooks.com/ckfinder/userfiles/files/free-robux-codes-generator-no-verification_GM431946152.pdfIn PDF document text
- https://eagleeyebooks.com/ckfinder/userfiles/files/where-can-i-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
- https://www.urcouponsdeal.com/2019/03/coin-master-free-spin-and-coin-links.htmlIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_003_off00004d7c.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4D7C	26064 bytes
SHA-256: `74effc9874053150761c1f871ff29b6b9a32c4761e880fc0ccbb914d8890ddf7`
`font_01_sfnt_off00008a4c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8A4C	3400 bytes
SHA-256: `4b3e0f36ad1e0c7e3ea5c178fd2b4f097d1e01575fc6a4101a8b520db34dfe07`
`font_02_sfnt_off00009576.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9576	18424 bytes
SHA-256: `e21c1a46e414e08f32ecd5b141a565b40ef5ebf0a551a42677bec20a6ad54cab`

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