PDF malware analysis — malicious · a1f881512a12dd13

MALICIOUS

PDF

42.2 KB Created: 2021-05-14 05:51:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05

MD5: 05260b96ab202eba2d321d9558210c10 SHA-1: afd21c4d2daee9b55a7e53057419d91d7e6bee0c SHA-256: a1f881512a12dd137c4f3b7ec262d271bde304ecc03df86b9dd32489f371eb8b

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains a high-severity heuristic firing for a 'free generator / game hack' lure, directing users to a suspicious URL. The document body and embedded URLs reinforce this theme, suggesting a phishing or scam attempt to trick users into visiting malicious sites. No scripts were extracted from this sample, but the embedded URLs are the primary indicators of malicious intent.

Machine Learning

Nyx PDF Classifier malicious score 0.9971

Heuristics 4

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-without-verification-game-hack PDF link annotation
- https://maximabm.com/uploaded_files/userfiles/files/rbxoffer-com-free-robux_GM431946152.pdfIn PDF document text
- https://maximabm.com/uploaded_files/userfiles/files/www-roblox-com-free-robux_GM431946152.pdfIn PDF document text
- https://maximabm.com/uploaded_files/userfiles/files/coin-master-free-gold_GM406889139.pdfIn PDF document text
- https://www.maximabm.com/uploaded_files/userfiles/files/spin-free-coin-master_GM406889139.pdfIn PDF document text
- https://maximabm.com/uploaded_files/userfiles/files/minecraft-free-download-apk-softonic_GM479516143.pdfIn PDF document text
- https://maximabm.com/uploaded_files/userfiles/files/coin-master-tiradas-gratis-link_GM406889139.pdfIn PDF document text
- https://maximabm.com/uploaded_files/userfiles/files/free-robux-stream_GM431946152.pdfIn PDF document text
- https://maximabm.com/uploaded_files/userfiles/files/free-roblox-gift-card-codes-2021-unused_GM431946152.pdfIn PDF document text
- https://www.maximabm.com/uploaded_files/userfiles/files/free-robux-no-offers_GM431946152.pdfIn PDF document text
- https://www.maximabm.com/uploaded_files/userfiles/files/daily-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
- https://www.maximabm.com/uploaded_files/userfiles/files/earn-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
- https://www.maximabm.com/uploaded_files/userfiles/files/free-coin-master-spins_GM406889139.pdfIn PDF document text
- https://maximabm.com/uploaded_files/userfiles/files/coin-master-free-spins-hack_GM406889139.pdfIn PDF document text
- https://www.maximabm.com/uploaded_files/userfiles/files/coin-master-free-coins-link-2021-today_GM406889139.pdfIn PDF document text
- https://www.maximabm.com/uploaded_files/userfiles/files/free-spins-on-coin-master-iphone_GM406889139.pdfIn PDF document text
- https://www.maximabm.com/uploaded_files/userfiles/files/coin-master-free-spins-apk-2021_GM406889139.pdfIn PDF document text
- https://maximabm.com/uploaded_files/userfiles/files/coin-master-money-hack_GM406889139.pdfIn PDF document text
- https://www.maximabm.com/uploaded_files/userfiles/files/microsoft-bing-free-robux_GM431946152.pdfIn PDF document text
- https://www.maximabm.com/uploaded_files/userfiles/files/roblox-robux-page_GM431946152.pdfIn PDF document text
- https://maximabm.com/uploaded_files/userfiles/files/coin-master-hack-ios-cydia_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_off000049fc.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x49FC	24308 bytes
SHA-256: `dce6ae246f260eef1d2128fa8ee004d2ab5dc533cef2708fc794d18e0b956df0`
`font_01_sfnt_off000081e0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x81E0	18524 bytes
SHA-256: `7fc878e37a04f100761010bc9f62acc5eeda79405cecb50f5f51fd752a27cfee`

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