PDF malware analysis — malicious · 38e7f0d8d377f755

MALICIOUS

PDF

46.7 KB Created: 2021-05-10 22:02:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05

MD5: df73debe655b23bf96d447f6e239f6ab SHA-1: c31a34ae508afc082714387dbe2d202d3d782b44 SHA-256: 38e7f0d8d377f755c0aead138c94a4b7c747c1b1bf0d7acc6acac7b26fe8f3f8

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 0.8948

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/roblox-mobile-hack-game-hack PDF link annotation
- http://www.myresidence.lu/userfiles/files/como-descargar-coin-master-hackeado_GM406889139.pdfIn PDF document text
- http://www.myresidence.lu/userfiles/files/get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
- http://www.myresidence.lu/userfiles/files/robux-fun-hack_GM431946152.pdfIn PDF document text
- http://www.myresidence.lu/userfiles/files/www-rbx-com_GM431946152.pdfIn PDF document text
- http://www.myresidence.lu/userfiles/files/coin-master-fan-page-giveaway_GM406889139.pdfIn PDF document text
- http://www.myresidence.lu/userfiles/files/haktuts-coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
- http://www.myresidence.lu/userfiles/files/coin-master-free-attack-hack_GM406889139.pdfIn PDF document text
- http://www.myresidence.lu/userfiles/files/hack-para-coin-master-sin-verification_GM406889139.pdfIn PDF document text
- http://www.myresidence.lu/userfiles/files/daily-coin-master-free-spins_GM406889139.pdfIn PDF document text
- http://www.myresidence.lu/userfiles/files/can-you-give-me-free-robux_GM431946152.pdfIn PDF document text
- http://www.myresidence.lu/userfiles/files/roblox-t-shirt-free_GM431946152.pdfIn PDF document text
- http://www.myresidence.lu/userfiles/files/roblox-army-free-robux_GM431946152.pdfIn PDF document text
- http://www.myresidence.lu/userfiles/files/hack-minecraft_GM479516143.pdfIn PDF document text
- http://www.myresidence.lu/userfiles/files/robux-online_GM431946152.pdfIn PDF document text
- http://www.myresidence.lu/userfiles/files/daily-coin-master_GM406889139.pdfIn PDF document text
- http://www.myresidence.lu/userfiles/files/best-minecraft-hacked-client_GM479516143.pdfIn PDF document text
- http://www.myresidence.lu/userfiles/files/how-to-get-free-roebucks-on-roblox_GM431946152.pdfIn PDF document text
- http://www.myresidence.lu/userfiles/files/free-premium-roblox_GM431946152.pdfIn PDF document text
- http://www.myresidence.lu/userfiles/files/how-to-get-robux-easy_GM431946152.pdfIn PDF document text
- http://www.myresidence.lu/userfiles/files/free-spins-coin-master-2021_GM406889139.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
`stream_003_off00004a01.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4A01	27380 bytes
SHA-256: `1c4622eb69f25593050e269826035d9c1955d37a8d048cf4c1d6caf3929f679f`
`font_01_sfnt_off00008504.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8504	6100 bytes
SHA-256: `f866077ce59d6ea276f75e4af76daa2aab5f3a1a679df144776123d85664d65c`
`font_02_sfnt_off00009390.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9390	18500 bytes
SHA-256: `e5e44b7d88d65c0aa39187413bdce35fa7eb26b841b7c8af9c826d312b99eefc`

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