PDF malware analysis — malicious · d47586f48a0c0805

MALICIOUS

PDF

34.9 KB Created: 2021-07-05 02:27:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05

MD5: 0376a290d4d40c02660c2f122a3ee54c SHA-1: 148c4dbf1cb6d8cf2655d20fc66036039b41ff90 SHA-256: d47586f48a0c08052d2af3f0f2014892c3c11532d3657e77803b619aa7fde629

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/479516143/how-to-get-a-free-minecraft-server-game-hack PDF link annotation
- https://www.cgalgeria-dubai.com/userfiles/files/get-free-gold-cards-in-coin-master_GM406889139.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/coin-master-hack-tool-v1-9_GM406889139.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/coin-master-heaven-free-spins-today_GM406889139.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/code-for-the-roblox-hack-generator_GM431946152.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/roblox-wizard-tycoon-hack_GM431946152.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/minecraft-for-chromebook-free_GM479516143.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/coin-master-free-coins-and-spins_GM406889139.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/coin-master-free-spins-iphone_GM406889139.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/how-to-hack-a-minecraft-server_GM479516143.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/coin-master-free-spins-and-coins-blogspot_GM406889139.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/google-moon-active_GM406889139.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/cheats-coin-master-free_GM406889139.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/daily-free-spins-coin-master_GM406889139.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/websites-that-give-you-free-robux_GM431946152.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/free-coin-spin-daily-link-coin-master_GM406889139.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/how-to-get-free-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/free-coin-master-cards_GM406889139.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/coin-master-free-spin-codes_GM406889139.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/free-coin-spin-coin-master_GM406889139.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/coin-master-hack-app-2021_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
`font_00_sfnt_off0000336f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x336F	22628 bytes
SHA-256: `0488c675ed7c5d19af7334605b92fb2745d79d46f3139213b35c427d01f73355`
`font_01_sfnt_off000065e7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x65E7	18276 bytes
SHA-256: `c7687a4ed826b999755e6fe3d140333e3438c4cba827dc1a6d1eeb6d89324bde`

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