PDF malware analysis — malicious · d9eb5dd8e054dfb8

MALICIOUS

PDF

45.7 KB Created: 2021-05-15 16:46:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: d72d41f1e035dc211c04a001852e386d SHA-1: d9de5f1391cb3d5484fdf2c70ef640412af62128 SHA-256: d9eb5dd8e054dfb8d85a16a72fe4ab616e5ca5568fd2a5b48808741325cf90e4

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

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 0.9507

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/431946152/how-to-get-free-robux-youtube-game-hack PDF link annotation
- https://www.tw-storage.com.tw/upload/files/coin-master-daily-free-spins-link_GM406889139.pdfIn PDF document text
- https://www.tw-storage.com.tw/upload/files/minecraft-story-mode-free_GM479516143.pdfIn PDF document text
- https://www.tw-storage.com.tw/upload/files/coin-master-el-tiger-card-free_GM406889139.pdfIn PDF document text
- https://www.tw-storage.com.tw/upload/files/coin-master-spin-link-hack_GM406889139.pdfIn PDF document text
- https://www.tw-storage.com.tw/upload/files/hack-coin-master-online_GM406889139.pdfIn PDF document text
- https://www.tw-storage.com.tw/upload/files/free-robux-no-survey_GM431946152.pdfIn PDF document text
- https://www.tw-storage.com.tw/upload/files/coin-master-hack-2021_GM406889139.pdfIn PDF document text
- https://www.tw-storage.com.tw/upload/files/coin-master-free-coin-hack_GM406889139.pdfIn PDF document text
- https://www.tw-storage.com.tw/upload/files/coin-master-village-4_GM406889139.pdfIn PDF document text
- https://www.tw-storage.com.tw/upload/files/coin-master-bonus_GM406889139.pdfIn PDF document text
- https://www.tw-storage.com.tw/upload/files/free-robux-no-human-verification-or-survey-or-download-2021_GM431946152.pdfIn PDF document text
- https://www.tw-storage.com.tw/upload/files/rblx-gg-free-robux_GM431946152.pdfIn PDF document text
- https://www.tw-storage.com.tw/upload/files/free-robux-2021_GM431946152.pdfIn PDF document text
- https://www.tw-storage.com.tw/upload/files/how-to-change-your-username-on-roblox-for-free-2021_GM431946152.pdfIn PDF document text
- https://www.tw-storage.com.tw/upload/files/free-spins-from-coin-master_GM406889139.pdfIn PDF document text
- https://www.tw-storage.com.tw/upload/files/how-to-hack-a-minecraft-server-and-make-yourself-op_GM479516143.pdfIn PDF document text
- https://www.tw-storage.com.tw/upload/files/how-to-get-free-coins-on-coin-master-hack_GM406889139.pdfIn PDF document text
- https://www.tw-storage.com.tw/upload/files/master-free-spin-and-coin-links-html-m-1_GM406889139.pdfIn PDF document text
- https://www.tw-storage.com.tw/upload/files/coin-master-hack-unlimited-spins-and-coins-cheats_GM406889139.pdfIn PDF document text
- https://www.tw-storage.com.tw/upload/files/aternos-free-minecraft-server_GM479516143.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
`font_00_sfnt_off00004a9e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4A9E	25520 bytes
SHA-256: `e629560c8291c0d6ded854764b21a464380beab03f575bcacc0da798ebc3e49d`
`font_01_sfnt_off000085bc.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x85BC	2828 bytes
SHA-256: `db1860fd79a3f2cbe32e2bada3ba4c68a2d581b7a24294387cd777233cc9cef6`
`font_02_sfnt_off00008f72.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8F72	18444 bytes
SHA-256: `c8869677d4d84c4518e8410e1128de6ae04a76f8db213e07b668dd1668cda2fe`

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