PDF malware analysis — malicious · a2c610b658ded429

MALICIOUS

PDF

47.2 KB Created: 2021-05-16 17:27:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: ef7e279c41a615eec77658f954223d2d SHA-1: 16273b0de2d8164f0a762114483fc2f07ed476bb SHA-256: a2c610b658ded4297a8ff3d4d654a8b7a7794f206fd614f2f1aa8e3e22c2d919

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains numerous embedded URLs, identified as a 'PDF_SEO_LINK_FARM' heuristic, suggesting a tactic to generate traffic or distribute spam. The document body and extracted URLs point towards lures related to game cheats and free items, a common social engineering tactic. The ML classifier also flagged this PDF as malicious, increasing confidence in its harmful intent.

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/431946152/free-roblox-adopt-me-pets-game-hack
- https://financia-business-school.com/static/upload/files/free-coins-for-coin-master_GM406889139.pdf
- https://financia-business-school.com/static/upload/files/coin-master-free-spins-2021-today_GM406889139.pdf
- https://financia-business-school.com/static/upload/files/coin-master-70-spin-link_GM406889139.pdf
- https://financia-business-school.com/static/upload/files/coin-master-free-spin-generator-without-human-verification_GM406889139.pdf
- https://financia-business-school.com/static/upload/files/blogger-coin-master-free-spins_GM406889139.pdf
- https://financia-business-school.com/static/upload/files/how-to-get-free-pets-in-adopt-me-roblox_GM431946152.pdf
- https://financia-business-school.com/static/upload/files/coin-master-free-spins-and-coins-2021_GM406889139.pdf
- https://financia-business-school.com/static/upload/files/how-to-get-free-cards-in-coin-master_GM406889139.pdf
- https://financia-business-school.com/static/upload/files/login-robux_GM431946152.pdf
- https://financia-business-school.com/static/upload/files/how-to-get-free-robux-on-mobile_GM431946152.pdf
- https://financia-business-school.com/static/upload/files/how-to-make-free-robux_GM431946152.pdf
- https://financia-business-school.com/static/upload/files/how-to-get-free-robux-on-roblox-2021_GM431946152.pdf
- https://financia-business-school.com/static/upload/files/free-spin-coin-master-hack-2021_GM406889139.pdf
- https://financia-business-school.com/static/upload/files/free-coin-master-spins-2021_GM406889139.pdf
- https://financia-business-school.com/static/upload/files/spins-coin-master_GM406889139.pdf
- https://financia-business-school.com/static/upload/files/free-spin-coin-master-ios_GM406889139.pdf
- https://financia-business-school.com/static/upload/files/all-free-items-in-roblox_GM431946152.pdf
- https://financia-business-school.com/static/upload/files/games-like-minecraft-but-free_GM479516143.pdf
- https://financia-business-school.com/static/upload/files/coin-master-free-spins-and-coins-blogspot_GM406889139.pdf
- https://financia-business-school.com/static/upload/files/free-robux-2021-no-human-verification_GM431946152.pdf
- http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_003_off00004c0c.bin` `0b0454908172fa5dcdc128b21b69b0afdf209ee63070b39ba115ff988a329e59`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4C0C	27156 bytes
`font_01_sfnt_off00008af8.bin` `a66b570a908761b39e6d9e18bcb667c353840a86c6a7db528f79d01abe6b23a1`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8AF8	2844 bytes
`font_02_sfnt_off0000949f.bin` `52cfe92e200dfff1806eef07ab2f46449592264c572d29f9bbb977df1fa2ebc4`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x949F	18752 bytes

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