PDF malware analysis — malicious · 44771b4a2bdb5bc9

MALICIOUS

PDF

42.0 KB Created: 2021-05-18 02:16:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27

MD5: 7e455acf9255c8b42b87810003b81eb9 SHA-1: 230fe6a9c664f5a6bac55900176b3ea2f6ab53c6 SHA-256: 44771b4a2bdb5bc9d65b4bdc07798bbc4b16e797524dd8db47630f0999ca7d96

142 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document functions as a link farm, employing a game hack lure to direct users to a network of SEO-optimized PDF files. The primary URL, https://netcdn.xyz/app/406889139/coin-master-free-spins-a2z-help-game-hack, serves as an initial redirector. The document's structure and numerous external links indicate a campaign to drive traffic to potentially malicious or ad-filled content, leveraging common game-related lures.

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/406889139/coin-master-free-spins-a2z-help-game-hack PDF link annotation
- https://www.aevasia.com/uploaded_files/userfiles/files/coin-master-stop-attack-hack_GM406889139.pdfIn PDF document text
- https://www.aevasia.com/uploaded_files/userfiles/files/free-coin-master-hack-no-verification_GM406889139.pdfIn PDF document text
- https://www.aevasia.com/uploaded_files/userfiles/files/coin-master-free-spins-2021-hack_GM406889139.pdfIn PDF document text
- https://www.aevasia.com/uploaded_files/userfiles/files/coin-master-game-hunters-club_GM406889139.pdfIn PDF document text
- https://www.aevasia.com/uploaded_files/userfiles/files/robux-generator-no-verification-needed_GM431946152.pdfIn PDF document text
- https://www.aevasia.com/uploaded_files/userfiles/files/is-there-any-way-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://www.aevasia.com/uploaded_files/userfiles/files/how-to-hack-coin-master-ios-no-jailbreak_GM406889139.pdfIn PDF document text
- https://www.aevasia.com/uploaded_files/userfiles/files/free-robux-today_GM431946152.pdfIn PDF document text
- https://www.aevasia.com/uploaded_files/userfiles/files/free-spins-coin-master-links-twitter_GM406889139.pdfIn PDF document text
- https://www.aevasia.com/uploaded_files/userfiles/files/roblox-toy-codes-free_GM431946152.pdfIn PDF document text
- https://www.aevasia.com/uploaded_files/userfiles/files/coin-master-free-spins-apk_GM406889139.pdfIn PDF document text
- https://www.aevasia.com/uploaded_files/userfiles/files/free-robux-promo-codes_GM431946152.pdfIn PDF document text
- https://www.aevasia.com/uploaded_files/userfiles/files/roblox-free-robux-website_GM431946152.pdfIn PDF document text
- https://www.aevasia.com/uploaded_files/userfiles/files/totally-free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
- https://www.aevasia.com/uploaded_files/userfiles/files/tower-of-hell-roblox-hack_GM431946152.pdfIn PDF document text
- https://www.aevasia.com/uploaded_files/userfiles/files/coin-master-hack-to-get-free-spins_GM406889139.pdfIn PDF document text
- https://www.aevasia.com/uploaded_files/userfiles/files/free-robux-codes-2021-not-used_GM431946152.pdfIn PDF document text
- https://www.aevasia.com/uploaded_files/userfiles/files/get-free-robux-2021_GM431946152.pdfIn PDF document text
- https://www.aevasia.com/uploaded_files/userfiles/files/coin-master-free-spins-link-blogspot-2021_GM406889139.pdfIn PDF document text
- https://www.aevasia.com/uploaded_files/userfiles/files/free-robux-stream_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_off00004b90.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4B90	23996 bytes
SHA-256: `c013b00bd7b6957cc9928e88bad8e4763c4d6900bcb77bb59abb53e4ffb04432`
`font_01_sfnt_off0000822b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x822B	18168 bytes
SHA-256: `a5884a39bf45b42a5821e2aa54ec8691fbc2d69a0c3221e4e545f5cdbb5ba5a1`

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