PDF malware analysis — malicious · 5d346bc4d7b79a83

MALICIOUS

PDF

35.1 KB Created: 2021-07-04 15:38:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01

MD5: 17678675221bf928afaff31f7dfc4749 SHA-1: dd1a3c803fe584a8366778f49de05a4fc937e08a SHA-256: 5d346bc4d7b79a8337a0b6eebf6cb49a2a098b066626bddf827ca736277da6f2

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 0.9980

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 http://netcdn.tw/app/406889139/how-to-get-coin-master-free-spin-link-game-hack PDF link annotation
- https://www.yatrikathmandusuite.com/userfiles/files/robuxmatch-com-free-robux_GM431946152.pdfIn PDF document text
- https://www.yatrikathmandusuite.com/userfiles/files/pokemon-go-windows-free-download_GM1094591345.pdfIn PDF document text
- https://www.yatrikathmandusuite.com/userfiles/files/roblox-bux-free_GM431946152.pdfIn PDF document text
- https://www.yatrikathmandusuite.com/userfiles/files/coin-master-free-spins-hack-2021_GM406889139.pdfIn PDF document text
- https://www.yatrikathmandusuite.com/userfiles/files/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
- https://www.yatrikathmandusuite.com/userfiles/files/robux-websites-that-work_GM431946152.pdfIn PDF document text
- https://www.yatrikathmandusuite.com/userfiles/files/coin-master-spin-hack-no-verification_GM406889139.pdfIn PDF document text
- https://www.yatrikathmandusuite.com/userfiles/files/free-coin-and-spin-in-coin-master_GM406889139.pdfIn PDF document text
- https://www.yatrikathmandusuite.com/userfiles/files/rbx-website_GM431946152.pdfIn PDF document text
- https://www.yatrikathmandusuite.com/userfiles/files/coin-master-hack_GM406889139.pdfIn PDF document text
- https://www.yatrikathmandusuite.com/userfiles/files/pig-master-free-coins-and-spins_GM406889139.pdfIn PDF document text
- https://www.yatrikathmandusuite.com/userfiles/files/mobihack-net-roblox-hack_GM431946152.pdfIn PDF document text
- https://www.yatrikathmandusuite.com/userfiles/files/how-to-get-minecraft-for-free-2021_GM479516143.pdfIn PDF document text
- https://www.yatrikathmandusuite.com/userfiles/files/free-robux-without-human-verification-real_GM431946152.pdfIn PDF document text
- https://www.yatrikathmandusuite.com/userfiles/files/how-to-hack-any-roblox-account_GM431946152.pdfIn PDF document text
- https://www.yatrikathmandusuite.com/userfiles/files/free-minecraft-skins-girl_GM479516143.pdfIn PDF document text
- https://www.yatrikathmandusuite.com/userfiles/files/how-to-hack-roblox-accounts-for-robux_GM431946152.pdfIn PDF document text
- https://www.yatrikathmandusuite.com/userfiles/files/minecraft-games-online-free-no-download_GM479516143.pdfIn PDF document text
- https://www.yatrikathmandusuite.com/userfiles/files/free-tiktok-fans-without-verification_GM835599320.pdfIn PDF document text
- https://www.yatrikathmandusuite.com/userfiles/files/roblox-weird_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_002_off000032e8.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x32E8	22672 bytes
SHA-256: `cdbe5c9f19caf369a9a0d9f730f0f87c51f716d2f153e03ac6882345688ab59f`
`font_01_sfnt_off000065b2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x65B2	18508 bytes
SHA-256: `3ad8961e57dc724dc20a452ead4f3451e43043d4ea6671b14ac2553528afab9c`

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