PDF malware analysis — malicious · 2422e4e86983a7c1

MALICIOUS

PDF

43.7 KB Created: 2021-05-16 22:33:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13

MD5: 5b8093b21dbe734ec6f2babdbb1d3b80 SHA-1: 283c1a63c903fa5a5874e6125aa0756ea0a73677 SHA-256: 2422e4e86983a7c1ec6a8f81d8a2cc1bab37d2f8ab153623a8ec7e65c239cd73

62 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains multiple embedded and linked URLs that point to sites offering game-related cheats, which is a common lure for malware distribution. The ML classifier strongly flagged this PDF as malicious, and the presence of a download button heuristic further supports the intent to trick users into downloading a payload. The document body, though heavily corrupted, contains fragments related to 'free coin master spins' and a URL, reinforcing the lure.

Machine Learning

Nyx PDF Classifier malicious score 0.9969

Heuristics 4

Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL

PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
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/406889139/free-coin-master-spins-2021-game-hack PDF link annotation
- http://45.115.65.99/__statics/gudangsoal/files/coin-master-free-spins-and-coins-daily_GM406889139.pdfPDF link annotation
- http://45.115.65.99/__statics/gudangsoal/files/www-free-robux_GM431946152.pdfIn PDF document text
- http://45.115.65.99/__statics/gudangsoal/files/www-free-robux-com_GM431946152.pdfIn PDF document text
- http://45.115.65.99/__statics/gudangsoal/files/free-coins-coin-master-iphone_GM406889139.pdfIn PDF document text
- http://45.115.65.99/__statics/gudangsoal/files/free-coins-for-coin-master_GM406889139.pdfIn PDF document text
- http://45.115.65.99/__statics/gudangsoal/files/wahoogaming-co-free-robux_GM431946152.pdfIn PDF document text
- http://45.115.65.99/__statics/gudangsoal/files/free-links-for-coin-master-2021_GM406889139.pdfIn PDF document text
- http://45.115.65.99/__statics/gudangsoal/files/coin-master-fan-page-free-spins_GM406889139.pdfIn PDF document text
- http://45.115.65.99/__statics/gudangsoal/files/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
- http://45.115.65.99/__statics/gudangsoal/files/coin-master-free-spin-2912-2021_GM406889139.pdfIn PDF document text
- http://45.115.65.99/__statics/gudangsoal/files/how-to-get-free-coins-for-coin-master_GM406889139.pdfIn PDF document text
- http://45.115.65.99/__statics/gudangsoal/files/free-robux-no-offers_GM431946152.pdfIn PDF document text
- http://45.115.65.99/__statics/gudangsoal/files/free-coins-coin-master-link_GM406889139.pdfIn PDF document text
- http://45.115.65.99/__statics/gudangsoal/files/minecraft-games-free-to-play-online_GM479516143.pdfIn PDF document text
- http://45.115.65.99/__statics/gudangsoal/files/robux-earning-sites_GM431946152.pdfIn PDF document text
- http://45.115.65.99/__statics/gudangsoal/files/minecraft-xray-hack_GM479516143.pdfIn PDF document text
- http://45.115.65.99/__statics/gudangsoal/files/roblox-land-free-robux_GM431946152.pdfIn PDF document text
- http://45.115.65.99/__statics/gudangsoal/files/minecraft-launcher-download-free_GM479516143.pdfIn PDF document text
- http://45.115.65.99/__statics/gudangsoal/files/free-roblox-svg_GM431946152.pdfIn PDF document text
- http://45.115.65.99/__statics/gudangsoal/files/coin-master-hacks_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_off00004c94.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4C94	26396 bytes
SHA-256: `044bef107847e2dc59242b5502c39bf210834794435197b46d90f3fe0d954c92`
`font_01_sfnt_off00008867.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8867	18288 bytes
SHA-256: `cbf21fc5c11f74798808ab0cc71af5e4bf323ced5a050f8983f0748b8c809d88`

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