PDF malware analysis — malicious · 2ee6dc92f8313ee7

MALICIOUS

PDF

41.8 KB Created: 2021-05-18 04:34:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16

MD5: 55caa69eeaebed88cab55c28d9128b77 SHA-1: e4e4d000d3a0e3728e03a0f990d611f4d257bb9d SHA-256: 2ee6dc92f8313ee74c2bb6dde98a67d60b172b3fab4b8f38750a2e987e773717

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains numerous external links, identified as a link farm, suggesting a malicious intent to redirect users to potentially harmful sites. The ML classifier also flagged this PDF as malicious with high confidence. The presence of a 'download' button lure further supports a malicious workflow, likely involving the download of additional payloads or redirection to phishing pages.

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/free-spins-promo-code-for-coin-master-game-hack PDF link annotation
- http://foo.com.tw/files/free-coins-coin-master-blog_GM406889139.pdfIn PDF document text
- http://foo.com.tw/files/free-spin-coin-master-game_GM406889139.pdfIn PDF document text
- http://foo.com.tw/files/spins-gratis-coin-master-hoy_GM406889139.pdfIn PDF document text
- http://foo.com.tw/files/is-it-possible-to-get-free-robux_GM431946152.pdfIn PDF document text
- http://foo.com.tw/files/100-free-coin-master-spins_GM406889139.pdfIn PDF document text
- http://foo.com.tw/files/roblox-free-robux_GM431946152.pdfIn PDF document text
- http://foo.com.tw/files/free-robux-hack-no-verification_GM431946152.pdfIn PDF document text
- http://foo.com.tw/files/how-to-get-free-robux-without-verifying_GM431946152.pdfIn PDF document text
- http://foo.com.tw/files/free-coin-master-coins_GM406889139.pdfIn PDF document text
- http://foo.com.tw/files/http-bitly-coin-master-free-2021-spins_GM406889139.pdfIn PDF document text
- http://foo.com.tw/files/woman-roblox_GM431946152.pdfIn PDF document text
- http://foo.com.tw/files/hack-robux_GM431946152.pdfIn PDF document text
- http://foo.com.tw/files/get-free-spins-coin-master-link_GM406889139.pdfIn PDF document text
- http://foo.com.tw/files/free-minecraft-maps-pe_GM479516143.pdfIn PDF document text
- http://foo.com.tw/files/free-coin-master-spins-and-coins_GM406889139.pdfIn PDF document text
- http://foo.com.tw/files/coin-master-app-hacks_GM406889139.pdfIn PDF document text
- http://foo.com.tw/files/free-minecraft-thumbnails_GM479516143.pdfIn PDF document text
- http://foo.com.tw/files/free-spins-on-coin-master-2021-ios_GM406889139.pdfIn PDF document text
- http://foo.com.tw/files/www-coin-master-hack-tk_GM406889139.pdfIn PDF document text
- http://foo.com.tw/files/free-robux-games-on-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_003_off000046d7.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x46D7	26072 bytes
SHA-256: `e51827ab511d7b92ba8fe2f58d752067479bd7705dc9e92e3a1fc9f21089b2ea`
`font_01_sfnt_off00008072.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8072	18476 bytes
SHA-256: `012804114e8e9e2aa3b79000d66a92024558acae5133cb67a1122bc204fa5aec`

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