PDF malware analysis — malicious · 52d1a2d5e629a489

MALICIOUS

PDF

47.0 KB Created: 2021-05-13 16:15:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 75d68a4d2214b2f6bb06e3dd830b6e5d SHA-1: df6aa3fdfd94e8e0ff497cee0290aa53eca2b9e0 SHA-256: 52d1a2d5e629a4898aa46082f2d7e80ebc80d9960d70fc5e24a68b0f3ef1b85f

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 0.8948

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/master-coin-free-link-game-hack PDF link annotation
- https://amozeshportal.ir/assets/uploads/pages/files/how-do-you-get-free-robux-2021_GM431946152.pdfIn PDF document text
- https://amozeshportal.ir/assets/uploads/pages/files/block-best-robux_GM431946152.pdfIn PDF document text
- https://amozeshportal.ir/assets/uploads/pages/files/get-free-spins-coin-master-october-2021_GM406889139.pdfIn PDF document text
- https://amozeshportal.ir/assets/uploads/pages/files/coin-master-hack-ios-download_GM406889139.pdfIn PDF document text
- https://amozeshportal.ir/assets/uploads/pages/files/free-coin-coin-master_GM406889139.pdfIn PDF document text
- https://amozeshportal.ir/assets/uploads/pages/files/free-robux-games-that-actually-work_GM431946152.pdfIn PDF document text
- https://amozeshportal.ir/assets/uploads/pages/files/roblox-robux-generator_GM431946152.pdfIn PDF document text
- https://amozeshportal.ir/assets/uploads/pages/files/free-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
- https://amozeshportal.ir/assets/uploads/pages/files/coin-master-fun-hack_GM406889139.pdfIn PDF document text
- https://amozeshportal.ir/assets/uploads/pages/files/how-to-get-free-spins-and-coins-in-coin-master_GM406889139.pdfIn PDF document text
- https://amozeshportal.ir/assets/uploads/pages/files/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://amozeshportal.ir/assets/uploads/pages/files/pasos-para-hackear-coins-master_GM406889139.pdfIn PDF document text
- https://amozeshportal.ir/assets/uploads/pages/files/can-you-really-hack-coin-master-ios_GM406889139.pdfIn PDF document text
- https://amozeshportal.ir/assets/uploads/pages/files/coin-master-game-for-pc-free-download_GM406889139.pdfIn PDF document text
- https://amozeshportal.ir/assets/uploads/pages/files/is-minecraft-bedrock-edition-free_GM479516143.pdfIn PDF document text
- https://amozeshportal.ir/assets/uploads/pages/files/roblox-avatar-tester_GM431946152.pdfIn PDF document text
- https://amozeshportal.ir/assets/uploads/pages/files/free-spin-and-daily-news-coin-master_GM406889139.pdfIn PDF document text
- https://amozeshportal.ir/assets/uploads/pages/files/roblox-generator-no-human-verification_GM431946152.pdfIn PDF document text
- https://amozeshportal.ir/assets/uploads/pages/files/google-how-do-you-get-robux_GM431946152.pdfIn PDF document text
- https://amozeshportal.ir/assets/uploads/pages/files/free-roblox-outfits_GM431946152.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_off00004b9d.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4B9D	29308 bytes
SHA-256: `1a29f2dfbe821ddd043565e63b1e72501122fa02413b495c46d77ded68edab75`
`font_01_sfnt_off00008cca.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8CCA	2812 bytes
SHA-256: `fc92a80cefddbcc51cb4ecd7284aa73b746cbd66adcf1d96110f0323ec06b51f`
`font_02_sfnt_off0000966a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x966A	17880 bytes
SHA-256: `f325bc51a5f33ec2ea6c889aa635c0e4104002a1859551a05fb0fcec2a10294b`

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