PDF malware analysis — malicious · 18e4dcaa8e1168ed

MALICIOUS

PDF

34.1 KB Created: 2021-06-18 05:49:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01

MD5: c8fc1375801ed6f4bbca16b6dd13d061 SHA-1: 87b5fbc142f6ab29129b62eeac6c02255e17fd03 SHA-256: 18e4dcaa8e1168ed05b7ffd59d86f7b7150a479f91e85c954bf8684077fcb7dd

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 http://netcdn.co/app/431946152/roblox-doungnquest-hack-game-hack PDF link annotation
- http://www.kraftyzone.com/uploaded_files/userfiles/files/free-robux-websites-that-work_GM431946152.pdfIn PDF document text
- http://www.kraftyzone.com/uploaded_files/userfiles/files/can-you-play-minecraft-for-free_GM479516143.pdfIn PDF document text
- http://www.kraftyzone.com/uploaded_files/userfiles/files/100-robux_GM431946152.pdfIn PDF document text
- http://www.kraftyzone.com/uploaded_files/userfiles/files/legit-coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
- http://www.kraftyzone.com/uploaded_files/userfiles/files/free-spin-coin-master-new-link_GM406889139.pdfIn PDF document text
- http://www.kraftyzone.com/uploaded_files/userfiles/files/robuxglobalcom_GM431946152.pdfIn PDF document text
- http://www.kraftyzone.com/uploaded_files/userfiles/files/www-free-robux_GM431946152.pdfIn PDF document text
- http://www.kraftyzone.com/uploaded_files/userfiles/files/free-spins-coin-master-links-blogger_GM406889139.pdfIn PDF document text
- http://www.kraftyzone.com/uploaded_files/userfiles/files/hack-robux-gratuit_GM431946152.pdfIn PDF document text
- http://www.kraftyzone.com/uploaded_files/userfiles/files/coin-master-free-gold-cards_GM406889139.pdfIn PDF document text
- http://www.kraftyzone.com/uploaded_files/userfiles/files/100-free-spins-coin-master_GM406889139.pdfIn PDF document text
- http://www.kraftyzone.com/uploaded_files/userfiles/files/how-do-i-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
- http://www.kraftyzone.com/uploaded_files/userfiles/files/free-minecraft-java-server_GM479516143.pdfIn PDF document text
- http://www.kraftyzone.com/uploaded_files/userfiles/files/how-to-get-free-robux-promo-codes_GM431946152.pdfIn PDF document text
- http://www.kraftyzone.com/uploaded_files/userfiles/files/roblox-hack-generator_GM431946152.pdfIn PDF document text
- http://www.kraftyzone.com/uploaded_files/userfiles/files/coin-master-100-spin-hack_GM406889139.pdfIn PDF document text
- http://www.kraftyzone.com/uploaded_files/userfiles/files/getting-hacked-on-roblox-prank_GM431946152.pdfIn PDF document text
- http://www.kraftyzone.com/uploaded_files/userfiles/files/roblox-gun-game-hacks_GM431946152.pdfIn PDF document text
- http://www.kraftyzone.com/uploaded_files/userfiles/files/coin-master-daily-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
- http://www.kraftyzone.com/uploaded_files/userfiles/files/how-to-get-free-robux-in-roblox-no-survey_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
`font_00_sfnt_off0000317d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x317D	21384 bytes
SHA-256: `4a1b3a3233c43d1b9409babc1ebdfc8c9f01621e7369dab753cf5209b7aca10e`
`font_01_sfnt_off00005ff8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5FF8	19052 bytes
SHA-256: `4dbef17cff818372fc57071dcb56a39b2ffd4c499b81ff2494056154d073501d`

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