PDF malware analysis — malicious · 621dcea8f2c629a8

MALICIOUS

PDF

45.4 KB Created: 2021-05-14 03:35:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27

MD5: d2f841c322bfff6145a325e28db767c7 SHA-1: 6be6bf9ae39ec26602d78462f3a8bc214de6129d SHA-256: 621dcea8f2c629a8e70a6b60a2afeade7e9d3f4d56b2a61a8c1839f995167da4

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains numerous external links, many of which are presented as download lures for game-related cheats and currency. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of such links, suggesting a campaign to drive traffic to potentially malicious sites. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

Nyx PDF Classifier malicious score 0.9507

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-pc-game-free-download-game-hack PDF link annotation
- http://apx-centre.ru/images/free-robux-with-no-verification-2021_GM431946152.pdfIn PDF document text
- http://apx-centre.ru/images/coin-master-free-spins-and-coins-daily-links_GM406889139.pdfIn PDF document text
- http://apx-centre.ru/images/how-do-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
- http://apx-centre.ru/images/roblox-report-hacker_GM431946152.pdfIn PDF document text
- http://apx-centre.ru/images/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
- http://apx-centre.ru/images/are-robux-generators-safe_GM431946152.pdfIn PDF document text
- http://apx-centre.ru/images/coin-master-hack-apk-april-12-2021_GM406889139.pdfIn PDF document text
- http://apx-centre.ru/images/coin-master-free-spins-links-2021_GM406889139.pdfIn PDF document text
- http://apx-centre.ru/images/free-robux-hack-no-verification_GM431946152.pdfIn PDF document text
- http://apx-centre.ru/images/coin-master-coins-hack_GM406889139.pdfIn PDF document text
- http://apx-centre.ru/images/google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
- http://apx-centre.ru/images/is-it-possible-to-get-free-robux_GM431946152.pdfIn PDF document text
- http://apx-centre.ru/images/minecraft-hack-client-download_GM479516143.pdfIn PDF document text
- http://apx-centre.ru/images/free-minecraft-accounts-2021_GM479516143.pdfIn PDF document text
- http://apx-centre.ru/images/60-free-spins-coin-master_GM406889139.pdfIn PDF document text
- http://apx-centre.ru/images/coin-master-free-spins-cheat_GM406889139.pdfIn PDF document text
- http://apx-centre.ru/images/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
- http://apx-centre.ru/images/how-to-get-free-roblox_GM431946152.pdfIn PDF document text
- http://apx-centre.ru/images/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
- http://apx-centre.ru/images/coin-master-free-spin-redeem-code_GM406889139.pdfIn 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_off00004939.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4939	24628 bytes
SHA-256: `877800a8a1a1f9d411cac94c969ab5b24c6f35e8297c7e566238831631d57ec1`
`font_01_sfnt_off000080cc.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x80CC	3620 bytes
SHA-256: `a7ffd47631dfdffd19913a7d019e14a4e4f6584a4e894343a0be0687632311e4`
`font_02_sfnt_off00008d8f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8D8F	18704 bytes
SHA-256: `8ce66c65e478767476711e8a187d609ec807e2903d8f7500c3ed78d36e0717ab`

Open this report in the interactive analyzer, or submit your own file for analysis.