PDF malware analysis — malicious · 4323d15d2207ac52

MALICIOUS

PDF

44.4 KB Created: 2021-05-18 00:37:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: 3d3082b1fe6ab31f46453b112ab1f9cb SHA-1: ddf373dd7eae6bf2ecfde2d16a2f81f72895fdd5 SHA-256: 4323d15d2207ac52991553d2a7415eb778f166603e3cf7e574048a67f9307044

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 https://netcdn.xyz/app/431946152/free-robux-meme-game-hack PDF link annotation
- https://www.alldaymedicines.com/uploaded_files/userfiles/files/minecraft-mods-download-free_GM479516143.pdfIn PDF document text
- https://www.alldaymedicines.com/uploaded_files/userfiles/files/roblox-comroblox_GM431946152.pdfIn PDF document text
- https://www.alldaymedicines.com/uploaded_files/userfiles/files/robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
- https://www.alldaymedicines.com/uploaded_files/userfiles/files/free-robux-generator-without-verification_GM431946152.pdfIn PDF document text
- https://www.alldaymedicines.com/uploaded_files/userfiles/files/coin-master-hack-2021-apk-download_GM406889139.pdfIn PDF document text
- https://www.alldaymedicines.com/uploaded_files/userfiles/files/huskybuscom-free-robux_GM431946152.pdfIn PDF document text
- https://www.alldaymedicines.com/uploaded_files/userfiles/files/free-minecraft-pe-server_GM479516143.pdfIn PDF document text
- https://www.alldaymedicines.com/uploaded_files/userfiles/files/make-robux_GM431946152.pdfIn PDF document text
- https://www.alldaymedicines.com/uploaded_files/userfiles/files/free-spins-coins-coin-master_GM406889139.pdfIn PDF document text
- https://www.alldaymedicines.com/uploaded_files/userfiles/files/get-robux-for-free-2021_GM431946152.pdfIn PDF document text
- https://www.alldaymedicines.com/uploaded_files/userfiles/files/how-to-change-roblox-username-for-free_GM431946152.pdfIn PDF document text
- https://www.alldaymedicines.com/uploaded_files/userfiles/files/tiktok-minecraft-hacks_GM479516143.pdfIn PDF document text
- https://www.alldaymedicines.com/uploaded_files/userfiles/files/how-do-i-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
- https://www.alldaymedicines.com/uploaded_files/userfiles/files/how-to-setup-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
- https://www.alldaymedicines.com/uploaded_files/userfiles/files/coin-master-free-spins-cash_GM406889139.pdfIn PDF document text
- https://www.alldaymedicines.com/uploaded_files/userfiles/files/how-to-get-stuff-that-cost-coins-free-mcpe-master_GM406889139.pdfIn PDF document text
- https://www.alldaymedicines.com/uploaded_files/userfiles/files/free-robux-ad_GM431946152.pdfIn PDF document text
- https://www.alldaymedicines.com/uploaded_files/userfiles/files/free-400-spins-coin-master_GM406889139.pdfIn PDF document text
- https://www.alldaymedicines.com/uploaded_files/userfiles/files/hack-a-game_GM431946152.pdfIn PDF document text
- https://www.alldaymedicines.com/uploaded_files/userfiles/files/robux-hack-free-robux_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_003_off000049d6.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x49D6	27720 bytes
SHA-256: `eb4dbfcc85356ec3780c8a09c622b59ea21eccb8b96a69cf37ddca9329e180d1`
`font_01_sfnt_off00008ad7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8AD7	18468 bytes
SHA-256: `3e6db3c9d7b90636a2057efa50536683edf8623f57b31e837fe721178fdf9957`

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