PDF malware analysis — malicious · fe1f067bee557646

MALICIOUS

PDF

43.0 KB Created: 2021-05-12 09:30:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 899208820f7cb16a7c432e91f8f388d8 SHA-1: 49c4187d6adfba115478386cafbb963e24e255f8 SHA-256: fe1f067bee557646e314e17cf12244db1919de608054af20ee29e4d4ad1692f8

142 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, 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 0.9971

Heuristics 5

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.
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/479516143/minecraft-windows-10-hacks-game-hack PDF link annotation
- https://baligaoritour.com/new/public/ckfinder/userfiles/files/coin-master-free-spins-apple_GM406889139.pdfIn PDF document text
- https://baligaoritour.com/new/public/ckfinder/userfiles/files/free-executor-roblox_GM431946152.pdfIn PDF document text
- https://baligaoritour.com/new/public/ckfinder/userfiles/files/coin-master-unlimited-spin-hack-mod-apk_GM406889139.pdfIn PDF document text
- https://baligaoritour.com/new/public/ckfinder/userfiles/files/moonactive-coin-master-free-spins_GM406889139.pdfIn PDF document text
- https://baligaoritour.com/new/public/ckfinder/userfiles/files/how-to-get-free-spins-on-coin-master-iphone_GM406889139.pdfIn PDF document text
- https://baligaoritour.com/new/public/ckfinder/userfiles/files/free-coin-master-app_GM406889139.pdfIn PDF document text
- https://baligaoritour.com/new/public/ckfinder/userfiles/files/coin-master-game-free-download-for-pc_GM406889139.pdfIn PDF document text
- https://baligaoritour.com/new/public/ckfinder/userfiles/files/get-free-robux-today_GM431946152.pdfIn PDF document text
- https://baligaoritour.com/new/public/ckfinder/userfiles/files/free-roblox-generator-for-roblox_GM431946152.pdfIn PDF document text
- https://baligaoritour.com/new/public/ckfinder/userfiles/files/free-robux-that-actually-works-2021_GM431946152.pdfIn PDF document text
- https://baligaoritour.com/new/public/ckfinder/userfiles/files/free-robux-gift-card-codes_GM431946152.pdfIn PDF document text
- https://baligaoritour.com/new/public/ckfinder/userfiles/files/robux-codes-generator-no-human-verification_GM431946152.pdfIn PDF document text
- https://baligaoritour.com/new/public/ckfinder/userfiles/files/earn-robux-today_GM431946152.pdfIn PDF document text
- https://baligaoritour.com/new/public/ckfinder/userfiles/files/coin-master-unlimited-spin-link_GM406889139.pdfIn PDF document text
- https://baligaoritour.com/new/public/ckfinder/userfiles/files/smart-lodhi-coin-master-hack_GM406889139.pdfIn PDF document text
- https://baligaoritour.com/new/public/ckfinder/userfiles/files/robux-online_GM431946152.pdfIn PDF document text
- https://baligaoritour.com/new/public/ckfinder/userfiles/files/free-spins-and-coins-from-coin-master-game_GM406889139.pdfIn PDF document text
- https://baligaoritour.com/new/public/ckfinder/userfiles/files/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
- https://baligaoritour.com/new/public/ckfinder/userfiles/files/free-robux-games-on-roblox_GM431946152.pdfIn PDF document text
- https://baligaoritour.com/new/public/ckfinder/userfiles/files/free-robux-with-no-human-verification_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_off00004b4f.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4B4F	25640 bytes
SHA-256: `b67df8ac945410f47b058eb00ddd295e6e76c6623ae7a6829521aa157006d545`
`font_01_sfnt_off00008480.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8480	18696 bytes
SHA-256: `14f86b407040f424958936cb2b2b49b26067a8980bd50a77917f0563cc1bff87`

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