PDF malware analysis — malicious · d4d2094bd5ab73ce

MALICIOUS

PDF

36.0 KB Created: 2021-07-06 20:25:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: 0270667e5642eb24d5718bf918935155 SHA-1: 16261960b68238bae0b76dc7340ebbfb5c86a35c SHA-256: d4d2094bd5ab73ceae4ff3298cd9f4ffa29e5defbd7e73b865c9ed838eb6bd89

142 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

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/406889139/free-coin-master-spins-and-coins-game-hack PDF link annotation
- https://www.mescosa.com/uploaded_files/userfiles/files/coin-master-mod-version-free-download-2021_GM406889139.pdfIn PDF document text
- https://www.mescosa.com/uploaded_files/userfiles/files/free-apk-mods-coin-master_GM406889139.pdfIn PDF document text
- https://www.mescosa.com/uploaded_files/userfiles/files/how-to-get-shirts-on-roblox-for-free_GM431946152.pdfIn PDF document text
- https://www.mescosa.com/uploaded_files/userfiles/files/roblox-password-hacker_GM431946152.pdfIn PDF document text
- https://www.mescosa.com/uploaded_files/userfiles/files/free-robux-codes-info_GM431946152.pdfIn PDF document text
- https://www.mescosa.com/uploaded_files/userfiles/files/daily-coin-master-free-link_GM406889139.pdfIn PDF document text
- https://www.mescosa.com/uploaded_files/userfiles/files/free-spins-coin-master-links-app_GM406889139.pdfIn PDF document text
- https://www.mescosa.com/uploaded_files/userfiles/files/how-to-duplicate-coin-master-spin-hack_GM406889139.pdfIn PDF document text
- https://www.mescosa.com/uploaded_files/userfiles/files/hack-coin-master-android-2021_GM406889139.pdfIn PDF document text
- https://www.mescosa.com/uploaded_files/userfiles/files/free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
- https://www.mescosa.com/uploaded_files/userfiles/files/coin-master-hack-app-2021-download_GM406889139.pdfIn PDF document text
- https://www.mescosa.com/uploaded_files/userfiles/files/dominus-hat-roblox-free_GM431946152.pdfIn PDF document text
- https://www.mescosa.com/uploaded_files/userfiles/files/free-minecraft-severs_GM479516143.pdfIn PDF document text
- https://www.mescosa.com/uploaded_files/userfiles/files/free-spin-coin-master-instagram_GM406889139.pdfIn PDF document text
- https://www.mescosa.com/uploaded_files/userfiles/files/coin-master-connection-lost-hack_GM406889139.pdfIn PDF document text
- https://www.mescosa.com/uploaded_files/userfiles/files/play-coin-master-online-free_GM406889139.pdfIn PDF document text
- https://www.mescosa.com/uploaded_files/userfiles/files/coin-master-free-spins-only_GM406889139.pdfIn PDF document text
- https://www.mescosa.com/uploaded_files/userfiles/files/apocylopse-rising-roblox-hacks_GM431946152.pdfIn PDF document text
- https://www.mescosa.com/uploaded_files/userfiles/files/cheat-way-to-give-robux-to-friends-on-roblox_GM431946152.pdfIn PDF document text
- https://www.mescosa.com/uploaded_files/userfiles/files/will-minecraft-dungeons-be-free_GM479516143.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_off00003523.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3523	23256 bytes
SHA-256: `3b0e17c966673d05c1efbdfe6e684c5b3147021fe287ac3fc4e72c4de12b3a1f`
`font_01_sfnt_off000069e7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x69E7	18348 bytes
SHA-256: `413415c914cf3d685700639dfc58d8cf1fe3a335bb6d031630b58f909af9418a`

Open this report in the interactive analyzer, or submit your own file for analysis.