PDF malware analysis — malicious · 433170d92aab1539

MALICIOUS

PDF

44.1 KB Created: 2021-05-12 01:07:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13

MD5: 2319d28fa4d81de543028e8d1623e572 SHA-1: c95114814a68750a0bec3239eaf182c205b8d60b SHA-256: 433170d92aab1539c0432cfb2fdeebb148a162b0612d5e216e0bc6956b8bbad4

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded links to external websites, many of which are structured as SEO-optimized PDF links related to game hacks and free in-game currency. The ML classifier strongly flagged this PDF as malicious, and the presence of external URIs and a link farm indicates a likely attempt to redirect users to potentially malicious or scam-related content. The document body, though partially corrupted, contains a URL that aligns with the overall theme of game-related lures.

Machine Learning

Nyx PDF Classifier malicious score 0.9969

Heuristics 4

Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM

Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
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/is-roblox-free-on-nintendo-switch-game-hack PDF link annotation
- https://creationegyptco.com/userfiles/files/www-claim-gg-to-earn-free-robux_GM431946152.pdfIn PDF document text
- https://creationegyptco.com/userfiles/files/tower-of-hell-roblox-hack_GM431946152.pdfIn PDF document text
- https://creationegyptco.com/userfiles/files/free-robux-without-verify_GM431946152.pdfIn PDF document text
- https://creationegyptco.com/userfiles/files/coin-master-hack-with-lucky-patcher_GM406889139.pdfIn PDF document text
- https://creationegyptco.com/userfiles/files/coin-master-daily-free-spins-25_GM406889139.pdfIn PDF document text
- https://creationegyptco.com/userfiles/files/free-robux-app_GM431946152.pdfIn PDF document text
- https://creationegyptco.com/userfiles/files/free-spins-coin-master-2021-today_GM406889139.pdfIn PDF document text
- https://creationegyptco.com/userfiles/files/no-human-verification-coin-master-hack_GM406889139.pdfIn PDF document text
- https://creationegyptco.com/userfiles/files/roblox-www-com_GM431946152.pdfIn PDF document text
- https://creationegyptco.com/userfiles/files/huskybuscom-free-robux_GM431946152.pdfIn PDF document text
- https://creationegyptco.com/userfiles/files/coin-master-free-chest-link_GM406889139.pdfIn PDF document text
- https://creationegyptco.com/userfiles/files/free-coin-master-link-2021_GM406889139.pdfIn PDF document text
- https://creationegyptco.com/userfiles/files/oprewards-com-robux_GM431946152.pdfIn PDF document text
- https://creationegyptco.com/userfiles/files/coin-master-free-spin-and-coins-links-2021_GM406889139.pdfIn PDF document text
- https://creationegyptco.com/userfiles/files/roblox-help-free-robux_GM431946152.pdfIn PDF document text
- https://creationegyptco.com/userfiles/files/free-gold-cards-coin-master_GM406889139.pdfIn PDF document text
- https://creationegyptco.com/userfiles/files/free-robux-hacker-us_GM431946152.pdfIn PDF document text
- https://creationegyptco.com/userfiles/files/free-roblox-gift-card-codes_GM431946152.pdfIn PDF document text
- https://creationegyptco.com/userfiles/files/free-spin-coin-master-apk_GM406889139.pdfIn PDF document text
- https://creationegyptco.com/userfiles/files/how-to-make-a-free-server-in-minecraft-java_GM479516143.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_off00004cbb.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4CBB	25764 bytes
SHA-256: `ddc70d35e0a6d7f58d4b220b0bbf79431dbc34ffeaa232e3f207b60b1462e405`
`font_01_sfnt_off000088b8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x88B8	18676 bytes
SHA-256: `0355fc141c5901985405d6ccc218732ea46d01f7e960bb3eb1147f2b88eb9437`

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