PDF malware analysis — malicious · e0fc6f5f786b9a70

MALICIOUS

PDF

34.7 KB Created: 2021-07-08 08:57:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27

MD5: 2e7da6b4685371365d648ca46993ad72 SHA-1: 86c70ce88b3da8e5d2322d21abc88b04f34c49af SHA-256: e0fc6f5f786b9a707fa42929d6b0421973ee28a65fb6213a79c95783a2bbedeb

142 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains numerous external links, including a primary lure to a 'game hack' website. It also features a link farm of SEO-optimized PDFs hosted on ati-gulf.com, suggesting an attempt to drive traffic and potentially monetize through ad clicks or further malicious redirects. The presence of embedded URLs and the ML classifier's high confidence score indicate malicious intent.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/431946152/roblox-free-models-game-hack PDF link annotation
- https://www.ati-gulf.com/uploaded_files/userfiles/files/free-robux-with-no-survey_GM431946152.pdfIn PDF document text
- https://www.ati-gulf.com/uploaded_files/userfiles/files/robux-prices_GM431946152.pdfIn PDF document text
- https://www.ati-gulf.com/uploaded_files/userfiles/files/how-to-hack-coin-master-android_GM406889139.pdfIn PDF document text
- https://www.ati-gulf.com/uploaded_files/userfiles/files/free-robux-gift-card-codes-2021-on-images_GM431946152.pdfIn PDF document text
- https://www.ati-gulf.com/uploaded_files/userfiles/files/free-daily-spins-coin-master_GM406889139.pdfIn PDF document text
- https://www.ati-gulf.com/uploaded_files/userfiles/files/games-in-roblox-that-give-you-robux_GM431946152.pdfIn PDF document text
- https://www.ati-gulf.com/uploaded_files/userfiles/files/tiktok-free-100-views_GM835599320.pdfIn PDF document text
- https://www.ati-gulf.com/uploaded_files/userfiles/files/minecraft-java-account-free_GM479516143.pdfIn PDF document text
- https://www.ati-gulf.com/uploaded_files/userfiles/files/free-spin-coin-master-link-2021_GM406889139.pdfIn PDF document text
- https://www.ati-gulf.com/uploaded_files/userfiles/files/give-me-free-robux_GM431946152.pdfIn PDF document text
- https://www.ati-gulf.com/uploaded_files/userfiles/files/5-sighns-that-u-have-been-hacked-on-roblox_GM431946152.pdfIn PDF document text
- https://www.ati-gulf.com/uploaded_files/userfiles/files/roblox-gucci-shirt-free_GM431946152.pdfIn PDF document text
- https://www.ati-gulf.com/uploaded_files/userfiles/files/coin-master-hack-ios-jailbreak_GM406889139.pdfIn PDF document text
- https://www.ati-gulf.com/uploaded_files/userfiles/files/free-robux-no-download_GM431946152.pdfIn PDF document text
- https://www.ati-gulf.com/uploaded_files/userfiles/files/free-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
- https://www.ati-gulf.com/uploaded_files/userfiles/files/roblox-galaxy-shirt-free-shipping_GM431946152.pdfIn PDF document text
- https://www.ati-gulf.com/uploaded_files/userfiles/files/coin-master-heaven-free-spins-today_GM406889139.pdfIn PDF document text
- https://www.ati-gulf.com/uploaded_files/userfiles/files/roblox-exploits-hacks_GM431946152.pdfIn PDF document text
- https://www.ati-gulf.com/uploaded_files/userfiles/files/roblox-password-generator-free-download_GM431946152.pdfIn PDF document text
- https://www.ati-gulf.com/uploaded_files/userfiles/files/bloxawards-com-earn-free-robux_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_off00003088.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3088	22528 bytes
SHA-256: `e3ba0c829b4cd8d434a7f39cf38282c2c52f825a99a0e4e0604a35d2ff005063`
`font_01_sfnt_off000062a6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x62A6	19020 bytes
SHA-256: `1b598ccfeb588c2751fdfa1bda46444779bdb133af401acc35bca94fed5912af`

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