PDF malware analysis — malicious · bb2a85a09b555706

MALICIOUS

PDF

44.5 KB Created: 2021-05-19 04:31:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: 5777308e95cc7c0c85100e6eecbbb3be SHA-1: 9b9aba0e49bd2aee91e8fe0195a0d3a68b65f24e SHA-256: bb2a85a09b555706765595746fc984479be30dc2bc3ea3084496832b6b00f329

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

Nyx PDF Classifier malicious score 0.9632

Heuristics 4

PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE

PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
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-coins-coin-master-iphone-game-hack PDF link annotation
- http://www.sbairs.com/datas/files/minecraft-windows-10-free-code_GM479516143.pdfIn PDF document text
- http://www.sbairs.com/datas/files/free-star-codes-roblox_GM431946152.pdfIn PDF document text
- http://www.sbairs.com/datas/files/blox-pink-robux-free_GM431946152.pdfIn PDF document text
- http://www.sbairs.com/datas/files/hacks-for-coin-master-game_GM406889139.pdfIn PDF document text
- http://www.sbairs.com/datas/files/how-to-get-free-robux-without-surveys_GM431946152.pdfIn PDF document text
- http://www.sbairs.com/datas/files/haktuts-coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
- http://www.sbairs.com/datas/files/minecraft-client-download_GM479516143.pdfIn PDF document text
- http://www.sbairs.com/datas/files/coin-master-daily-free-spins-link_GM406889139.pdfIn PDF document text
- http://www.sbairs.com/datas/files/wurst-18-9_GM479516143.pdfIn PDF document text
- http://www.sbairs.com/datas/files/free-roblox-generator_GM431946152.pdfIn PDF document text
- http://www.sbairs.com/datas/files/free-minecraft-games-for-kids_GM479516143.pdfIn PDF document text
- http://www.sbairs.com/datas/files/free-coin-coin-master_GM406889139.pdfIn PDF document text
- http://www.sbairs.com/datas/files/coin-master-free-download-for-pc_GM406889139.pdfIn PDF document text
- http://www.sbairs.com/datas/files/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
- http://www.sbairs.com/datas/files/roblox-no-download-hack_GM431946152.pdfIn PDF document text
- http://www.sbairs.com/datas/files/coin-master-free-spin-facebook-link_GM406889139.pdfIn PDF document text
- http://www.sbairs.com/datas/files/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
- http://www.sbairs.com/datas/files/free-robux-thumbnail_GM431946152.pdfIn PDF document text
- http://www.sbairs.com/datas/files/coin-master-spin-rewards_GM406889139.pdfIn PDF document text
- http://www.sbairs.com/datas/files/daily-free-spins-for-coin-master_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_off00004817.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4817	24460 bytes
SHA-256: `8e1e8c8f24cc4ebaa2693846dd6f607bd59575ff1d45d4e27b1e578d62f20edd`
`font_01_sfnt_off00007f77.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7F77	3560 bytes
SHA-256: `c953d730e49f69c7d62e02a926729ae4a31de13d9a976dc4a95b39cf47066c93`
`font_02_sfnt_off00008bfd.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8BFD	18052 bytes
SHA-256: `99dbb6b6b1c2666a4e7c95b3e8e09f0f63bf7a1f88354efaa1e52c2fabb98515`

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