PDF malware analysis — malicious · 328327b05ca5a7cd

MALICIOUS

PDF

45.8 KB Created: 2021-06-03 22:06:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05

MD5: a9c1a35b87f5e985c6c906583d053cea SHA-1: 245f874319f6b4681122899d41aa6298b9863a1e SHA-256: 328327b05ca5a7cd231e5ea07f160ad2587882b0ea77fc69bb30f4d9fdadadca

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 0.9864

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.online/app/406889139/coin-master-free-coins-link-facebook-game-hack PDF link annotation
- http://www.js100.com/uploads/ckeditor/files/hacking-apps-for-roblox_GM431946152.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/coin-master-hack-version-download-2021_GM406889139.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/demon-roblox_GM431946152.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/is-minecraft-java-free_GM479516143.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/coin-master-cards-free_GM406889139.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/coin-master-free-spin-and-coins-links-2021_GM406889139.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/get-free-coin-master_GM406889139.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/i-caught-my-mom-cheating-in-roblox_GM431946152.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/can-you-download-minecraft-for-free_GM479516143.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/how-to-win-free-robux_GM431946152.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/free-links-for-coin-master_GM406889139.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/free-spin-gratis-coin-master_GM406889139.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/roblox-free-hair-girl_GM431946152.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/robuxy-com-free-robux_GM431946152.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/free-robux-not-fake_GM431946152.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/roblox-zone-free-robux_GM431946152.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/hack-avatar_GM431946152.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/minecraft-marketplace-free_GM479516143.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/roblox-land-free-robux_GM431946152.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/free-coins-and-spins-for-coin-master_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
`stream_004_off000050d4.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x50D4	27644 bytes
SHA-256: `afb01deaa3676e9bca3b37eadbfe23178ef9db746d08607247a85ed261a7dd66`
`font_01_sfnt_off00009141.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9141	18040 bytes
SHA-256: `63f6a73c8fcac7a0296ba30c45c7d116406f1db46acc5b5307ffbf1c764f0ccd`

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