PDF malware analysis — malicious · a912cb069ac29afb

MALICIOUS

PDF

46.0 KB Created: 2021-05-13 08:01:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13

MD5: eabca446bb0daf1734973acd68a4e52e SHA-1: 6a0f4225f1d7c761ea6439c4ee904b9df6fdc4e7 SHA-256: a912cb069ac29afb836cbaf9bf98f0ce3757fc06336ca5aceaaa3be54378a7a8

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains a large number of external links, many of which are structured as a link farm for SEO purposes, pointing to sites offering free in-game currency or cheats. The ML classifier strongly flagged this PDF as malicious, and the presence of embedded URLs and a 'download button' lure reinforces the malicious intent. The document likely serves as a lure to direct users to malicious websites that may host further malware or phishing content.

Machine Learning

Nyx PDF Classifier malicious score 0.9432

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/free-spins-coin-master-app-game-hack PDF link annotation
- https://studiodegaetano.it/images/master-8-ball-pool-free-coins_GM406889139.pdfIn PDF document text
- https://studiodegaetano.it/images/ear-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
- https://studiodegaetano.it/images/coin-master-daily-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
- https://studiodegaetano.it/images/daily-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
- https://studiodegaetano.it/images/how-to-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
- https://studiodegaetano.it/images/hack-robux_GM431946152.pdfIn PDF document text
- https://studiodegaetano.it/images/roblox-studio-free-robux_GM431946152.pdfIn PDF document text
- https://studiodegaetano.it/images/how-to-become-a-hacker-in-roblox_GM431946152.pdfIn PDF document text
- https://studiodegaetano.it/images/how-to-hack-coin-master-android_GM406889139.pdfIn PDF document text
- https://studiodegaetano.it/images/get-free-cards-coin-master_GM406889139.pdfIn PDF document text
- https://studiodegaetano.it/images/how-to-get-free-robux-inspect_GM431946152.pdfIn PDF document text
- https://studiodegaetano.it/images/free-links-for-coin-master_GM406889139.pdfIn PDF document text
- https://studiodegaetano.it/images/free-spin-link-for-coin-master-haktuts_GM406889139.pdfIn PDF document text
- https://studiodegaetano.it/images/coin-master-free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
- https://studiodegaetano.it/images/latest-free-spin-coin-master-daily_GM406889139.pdfIn PDF document text
- https://studiodegaetano.it/images/free-robux-hack-2021_GM431946152.pdfIn PDF document text
- https://studiodegaetano.it/images/coin-master-mod-apk-free-download-for-android_GM406889139.pdfIn PDF document text
- https://studiodegaetano.it/images/coin-master-hack-version-download_GM406889139.pdfIn PDF document text
- https://studiodegaetano.it/images/how-to-hack-a-roblox-account-easy_GM431946152.pdfIn PDF document text
- https://studiodegaetano.it/images/best-free-robux-sites_GM431946152.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_003_off00004904.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4904	25052 bytes
SHA-256: `eab511d23044d66b7256f2a4bec8380fe1f827dbbc2c122be21585daec93f4e0`
`font_01_sfnt_off00008351.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8351	3400 bytes
SHA-256: `4b3e0f36ad1e0c7e3ea5c178fd2b4f097d1e01575fc6a4101a8b520db34dfe07`
`font_02_sfnt_off00008e7b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8E7B	19212 bytes
SHA-256: `8012e3a9574efded393389311e21f9434eb9c8e8b8527940a397cce8992b440d`

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