PDF malware analysis — malicious · fbd417e901cece38

MALICIOUS

PDF

34.2 KB Created: 2021-07-04 09:45:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01

MD5: 7d121ce5512c1a8a802d43909d120993 SHA-1: 6071f885818663d6ab35a18382c2692b1373cccd SHA-256: fbd417e901cece38fb3d97b5ed1bd40d2a3a9c137a3a02cf6c627e72b740bd09

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/479516143/free-minecraft-skin-packs-game-hack PDF link annotation
- https://htdvn.com/public/upload/files/roblox-land-free-robux_GM431946152.pdfIn PDF document text
- https://htdvn.com/public/upload/files/coin-master-hack-no-download_GM406889139.pdfIn PDF document text
- https://htdvn.com/public/upload/files/pokemon-go-free-codes-october-2021_GM1094591345.pdfIn PDF document text
- https://htdvn.com/public/upload/files/how-to-get-free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
- https://htdvn.com/public/upload/files/free-online-minecraft-server_GM479516143.pdfIn PDF document text
- https://htdvn.com/public/upload/files/minecraft-free-app_GM479516143.pdfIn PDF document text
- https://htdvn.com/public/upload/files/free-pc-robux_GM431946152.pdfIn PDF document text
- https://htdvn.com/public/upload/files/coin-master-free_GM406889139.pdfIn PDF document text
- https://htdvn.com/public/upload/files/free-robux-sites-that-work_GM431946152.pdfIn PDF document text
- https://htdvn.com/public/upload/files/how-to-get-catalog-items-for-free-free-robux_GM431946152.pdfIn PDF document text
- https://htdvn.com/public/upload/files/free-coin-master-gifts_GM406889139.pdfIn PDF document text
- https://htdvn.com/public/upload/files/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
- https://htdvn.com/public/upload/files/how-to-get-followers-on-tiktok-for-free_GM835599320.pdfIn PDF document text
- https://htdvn.com/public/upload/files/coin-master-hack-spin-generator_GM406889139.pdfIn PDF document text
- https://htdvn.com/public/upload/files/roblox-hack-deutsch-ohne-handynummer_GM431946152.pdfIn PDF document text
- https://htdvn.com/public/upload/files/best-games-of-free-robux-roblox_GM431946152.pdfIn PDF document text
- https://htdvn.com/public/upload/files/free-roblox-shirt-templates_GM431946152.pdfIn PDF document text
- https://htdvn.com/public/upload/files/get-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
- https://htdvn.com/public/upload/files/roblox-ice-cream-simulator-hack_GM431946152.pdfIn PDF document text
- https://htdvn.com/public/upload/files/free-spin-coin-master-2021-link_GM406889139.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
`font_00_sfnt_off000033d4.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x33D4	21764 bytes
SHA-256: `610fac952d7fd4664622f59a8059db53d7037ed00ee52a094b2b1c557eb107e0`
`font_01_sfnt_off00006389.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6389	18180 bytes
SHA-256: `af546ec7d16cdc8db8a545ddb361d3216713a52e8bef528030956627ce368622`

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