PDF malware analysis — malicious · 444d931b87f4ef37

MALICIOUS

PDF

44.6 KB Created: 2021-05-15 02:05:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 43d2f8cbe98badc76899fc17646aee1b SHA-1: 88ed35774fc49c59e87705af607ca632d42482d1 SHA-256: 444d931b87f4ef375dc807511afcc4df45a67a26e4e54f6883f8117c5eb61ff8

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains numerous links and a prominent lure related to 'Free Robux' and game hacks, directing users to a suspicious URL. The ML classifier strongly indicated maliciousness, and the PDF's structure suggests it's designed to exploit user interest in free in-game currency or cheats. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

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 https://netcdn.xyz/app/431946152/free-robux-please-game-hack PDF link annotation
- http://www.indokashcrafts.com/uploaded_files/userfiles/files/how-can-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
- http://www.indokashcrafts.com/uploaded_files/userfiles/files/play-minecraft-online-free_GM479516143.pdfIn PDF document text
- http://www.indokashcrafts.com/uploaded_files/userfiles/files/master-free-spin-and-coin-links-html-m-1_GM406889139.pdfIn PDF document text
- http://www.indokashcrafts.com/uploaded_files/userfiles/files/what-games-on-roblox-give-you-free-robux_GM431946152.pdfIn PDF document text
- http://www.indokashcrafts.com/uploaded_files/userfiles/files/how-do-i-earn-robux_GM431946152.pdfIn PDF document text
- http://www.indokashcrafts.com/uploaded_files/userfiles/files/easiest-coin-master-hack_GM406889139.pdfIn PDF document text
- http://www.indokashcrafts.com/uploaded_files/userfiles/files/free-robux-for-kids_GM431946152.pdfIn PDF document text
- http://www.indokashcrafts.com/uploaded_files/userfiles/files/rbxdemon_GM431946152.pdfIn PDF document text
- http://www.indokashcrafts.com/uploaded_files/userfiles/files/rewards-roblox-com_GM431946152.pdfIn PDF document text
- http://www.indokashcrafts.com/uploaded_files/userfiles/files/coin-master-free-spins-youthnow_GM406889139.pdfIn PDF document text
- http://www.indokashcrafts.com/uploaded_files/userfiles/files/free-robux-com-real_GM431946152.pdfIn PDF document text
- http://www.indokashcrafts.com/uploaded_files/userfiles/files/avatar-de-roblox_GM431946152.pdfIn PDF document text
- http://www.indokashcrafts.com/uploaded_files/userfiles/files/roblox-robux-hack_GM431946152.pdfIn PDF document text
- http://www.indokashcrafts.com/uploaded_files/userfiles/files/free-pet-food-coin-master_GM406889139.pdfIn PDF document text
- http://www.indokashcrafts.com/uploaded_files/userfiles/files/free-spins-coin-master-hack_GM406889139.pdfIn PDF document text
- http://www.indokashcrafts.com/uploaded_files/userfiles/files/minecraft-xray-hack_GM479516143.pdfIn PDF document text
- http://www.indokashcrafts.com/uploaded_files/userfiles/files/coin-master-homepage_GM406889139.pdfIn PDF document text
- http://www.indokashcrafts.com/uploaded_files/userfiles/files/coin-master-cracked-apk-free-download_GM406889139.pdfIn PDF document text
- http://www.indokashcrafts.com/uploaded_files/userfiles/files/coin-master-hack-unlimited-spins-apk_GM406889139.pdfIn PDF document text
- http://www.indokashcrafts.com/uploaded_files/userfiles/files/coin-master-hack-no-survey-2021_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_003_off00004bb6.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4BB6	29488 bytes
SHA-256: `7377341b37eae2c4767041ba6f4a173b072e34448663c7a03a21b225853a38af`
`font_01_sfnt_off00008ba0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8BA0	18472 bytes
SHA-256: `a4143b220e35e332e52efa777ecf598d1a164c1d6c5ab1887881bf2674d2e637`

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