PDF malware analysis — malicious · a4cb65a7627fa98a

MALICIOUS

PDF

41.7 KB Created: 2021-05-17 21:31:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17

MD5: a77515f00b937896713c783c8062a8ca SHA-1: d6eb76741aa760a85bfee8664284bd8c162ee48b SHA-256: a4cb65a7627fa98a8934d2010bc70f86009b1f9320f4718203caa731097f2cc4

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document contains numerous external links, many of which are structured as a link farm for SEO purposes, pointing to pages offering game cheats and hacks. The primary URL, https://netcdn.xyz/app/406889139/coin-master-spin-cheat-game-hack, suggests a malicious download or exploit attempt. While no scripts were explicitly extracted, the PDF structure and extensive link farm indicate a likely attempt to direct users to malicious content, potentially via a drive-by download or a phishing lure.

Machine Learning

Nyx PDF Classifier malicious score 0.9971

Heuristics 4

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.
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-spin-cheat-game-hack PDF link annotation
- https://europainstitut.hu/images/coin-master-hacks-for-iphone_GM406889139.pdfIn PDF document text
- https://europainstitut.hu/images/how-to-hack-people-in-roblox_GM431946152.pdfIn PDF document text
- https://europainstitut.hu/images/coin-master-hack-for-ios_GM406889139.pdfIn PDF document text
- https://europainstitut.hu/images/www-coinmaster_GM406889139.pdfIn PDF document text
- https://europainstitut.hu/images/coin-master-hack-without-verification-for-iphone_GM406889139.pdfIn PDF document text
- https://europainstitut.hu/images/hack-coin-master-site-rssingcom_GM406889139.pdfIn PDF document text
- https://europainstitut.hu/images/free-robux-no-gift-card_GM431946152.pdfIn PDF document text
- https://europainstitut.hu/images/free-unlimited-robux_GM431946152.pdfIn PDF document text
- https://europainstitut.hu/images/wahoo-gaming-co-free-robux_GM431946152.pdfIn PDF document text
- https://europainstitut.hu/images/cpbildco-robux_GM431946152.pdfIn PDF document text
- https://europainstitut.hu/images/free-robux-promo-codes-2021_GM431946152.pdfIn PDF document text
- https://europainstitut.hu/images/roblox-com-free-robux_GM431946152.pdfIn PDF document text
- https://europainstitut.hu/images/free-robux-card-codes_GM431946152.pdfIn PDF document text
- https://europainstitut.hu/images/coin-master-free-spins-hack-ios_GM406889139.pdfIn PDF document text
- https://europainstitut.hu/images/free-coins-and-spins-in-coin-master_GM406889139.pdfIn PDF document text
- https://europainstitut.hu/images/can-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
- https://europainstitut.hu/images/blogger-coin-master-free-spins_GM406889139.pdfIn PDF document text
- https://europainstitut.hu/images/free-coins-coin-master-iphone_GM406889139.pdfIn PDF document text
- https://europainstitut.hu/images/hack-coin-master-2021-pc_GM406889139.pdfIn PDF document text
- https://europainstitut.hu/images/coin-master-free-spins-link-today-hack_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_off0000494a.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x494A	24684 bytes
SHA-256: `705ba4ccfa87ee6e4594c38e014f882b71f650e02636949f539adcd3ebbed663`
`font_01_sfnt_off000081d4.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x81D4	17888 bytes
SHA-256: `6e952cda52cab557889c44e050e091d78c8f903a1a78f0754c4b08395fb72fca`

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