PDF malware analysis — malicious · da1fbe57ef6e55d5

MALICIOUS

PDF

46.9 KB Created: 2021-06-03 05:42:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: b8b745730dcf00f21413f8918b5a1170 SHA-1: 346e7508e859d9d73f8f0b16a1992d3864284ce5 SHA-256: da1fbe57ef6e55d5296c841eed0d2515d8a735ca06dde88c6f8be9efe4c0e624

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains heuristics indicating it's a lure for a game hack, specifically linking to a generator for 'Coin Master'. The embedded URL points to a domain associated with such lures. While no scripts were explicitly extracted, the PDF structure and the nature of the lure suggest an attempt to redirect the user to a malicious site, likely for credential harvesting or malware delivery.

Machine Learning

Nyx PDF Classifier malicious score 0.9769

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.online/app/406889139/coin-master-hack-spins-ios-game-hack PDF link annotation
- https://mawaridschools.com/uploaded_files/userfiles/files/free-coins-and-spins-coin-master-2021_GM406889139.pdfIn PDF document text
- https://mawaridschools.com/uploaded_files/userfiles/files/free-robux-just-enter-username_GM431946152.pdfIn PDF document text
- https://mawaridschools.com/uploaded_files/userfiles/files/pokemon-go-free-2021_GM1094591345.pdfIn PDF document text
- https://mawaridschools.com/uploaded_files/userfiles/files/can-you-really-hack-coin-master_GM406889139.pdfIn PDF document text
- https://mawaridschools.com/uploaded_files/userfiles/files/coin-master-free-spins-daily-1-ga_GM406889139.pdfIn PDF document text
- https://mawaridschools.com/uploaded_files/userfiles/files/cmaster-club-coin-master-hack-tool_GM406889139.pdfIn PDF document text
- https://mawaridschools.com/uploaded_files/userfiles/files/free-coins-coin-master_GM406889139.pdfIn PDF document text
- https://mawaridschools.com/uploaded_files/userfiles/files/202100-free-spins-coin-master_GM406889139.pdfIn PDF document text
- https://mawaridschools.com/uploaded_files/userfiles/files/http-bitly-coin-master-free-2021-spins_GM406889139.pdfIn PDF document text
- https://mawaridschools.com/uploaded_files/userfiles/files/free-minecraft-accounts-reddit_GM479516143.pdfIn PDF document text
- https://mawaridschools.com/uploaded_files/userfiles/files/hack-coin-pro-coin-master_GM406889139.pdfIn PDF document text
- https://mawaridschools.com/uploaded_files/userfiles/files/free-robux-promo-codes-2021_GM431946152.pdfIn PDF document text
- https://mawaridschools.com/uploaded_files/userfiles/files/coin-master-hack-2021-ios-download_GM406889139.pdfIn PDF document text
- https://mawaridschools.com/uploaded_files/userfiles/files/free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
- https://mawaridschools.com/uploaded_files/userfiles/files/free-roblox-accounts-2021_GM431946152.pdfIn PDF document text
- https://mawaridschools.com/uploaded_files/userfiles/files/roblox-free-clothes-hack_GM431946152.pdfIn PDF document text
- https://mawaridschools.com/uploaded_files/userfiles/files/how-to-get-minecraft-for-free-on-laptop_GM479516143.pdfIn PDF document text
- https://mawaridschools.com/uploaded_files/userfiles/files/roblox-free-robux-no-verification_GM431946152.pdfIn PDF document text
- https://mawaridschools.com/uploaded_files/userfiles/files/coin-master-free-snacks-link_GM406889139.pdfIn PDF document text
- https://mawaridschools.com/uploaded_files/userfiles/files/free-spins-coin-master-links-blogspot_GM406889139.pdfIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_004_off000053f7.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x53F7	24696 bytes
SHA-256: `f42610e23e01260c7186b464c8f16a4de3c09ed35433541f37c1788b2f9f70cc`
`font_01_sfnt_off00008bca.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8BCA	2824 bytes
SHA-256: `381f6d859be141449dd645f7be1484d2a1cf49218dc471b402dae69eaa2b11d5`
`font_02_sfnt_off0000956d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x956D	17892 bytes
SHA-256: `8a2199a6fb9e6551992738fdb7d2625a8f143b5a9fef4499610b6e02eb0e5450`

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