PDF malware analysis — malicious · e06fdaf92202bf34

MALICIOUS

PDF

45.1 KB Created: 2021-05-16 11:39:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 19dbb790535c0b199051c13e6d9750d8 SHA-1: 7303b47af35642f37d173a7175ecf9a9046d4e89 SHA-256: e06fdaf92202bf34717a9a85c23dc13c6b9895965cc037dc9b771d0ee2f6e276

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 0.9632

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 https://netcdn.xyz/app/406889139/coin-master-hack-tool-v1-9-game-hack PDF link annotation
- http://www.rigor.co.mz/uploaded_files/userfiles/files/free-coins-coin-master-haktuts_GM406889139.pdfIn PDF document text
- http://www.rigor.co.mz/uploaded_files/userfiles/files/coin-master-free-spins-and-coins-daily_GM406889139.pdfIn PDF document text
- http://www.rigor.co.mz/uploaded_files/userfiles/files/roblox-april-fools-hack_GM431946152.pdfIn PDF document text
- http://www.rigor.co.mz/uploaded_files/userfiles/files/static-moonactive-net-link_GM406889139.pdfIn PDF document text
- http://www.rigor.co.mz/uploaded_files/userfiles/files/how-to-hack-roblox-games_GM431946152.pdfIn PDF document text
- http://www.rigor.co.mz/uploaded_files/userfiles/files/free-coin-master-spins-and-coins_GM406889139.pdfIn PDF document text
- http://www.rigor.co.mz/uploaded_files/userfiles/files/coin-master-heaven-free-spins-today_GM406889139.pdfIn PDF document text
- http://www.rigor.co.mz/uploaded_files/userfiles/files/free-spins-coin-master-links-blogger_GM406889139.pdfIn PDF document text
- http://www.rigor.co.mz/uploaded_files/userfiles/files/coin-master-free-spins-1-coin-master_GM406889139.pdfIn PDF document text
- http://www.rigor.co.mz/uploaded_files/userfiles/files/minecraft-pe-apk-free-download_GM479516143.pdfIn PDF document text
- http://www.rigor.co.mz/uploaded_files/userfiles/files/hack-coin-master-for-android_GM406889139.pdfIn PDF document text
- http://www.rigor.co.mz/uploaded_files/userfiles/files/coin-master-hack-ios-cydia_GM406889139.pdfIn PDF document text
- http://www.rigor.co.mz/uploaded_files/userfiles/files/free-minecraft-bedrock-server-hosting-24-7_GM479516143.pdfIn PDF document text
- http://www.rigor.co.mz/uploaded_files/userfiles/files/coin-master-free-spins-april-2021_GM406889139.pdfIn PDF document text
- http://www.rigor.co.mz/uploaded_files/userfiles/files/coin-master-free-spins-links-2021_GM406889139.pdfIn PDF document text
- http://www.rigor.co.mz/uploaded_files/userfiles/files/get-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
- http://www.rigor.co.mz/uploaded_files/userfiles/files/games-that-give-free-robux_GM431946152.pdfIn PDF document text
- http://www.rigor.co.mz/uploaded_files/userfiles/files/how-to-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
- http://www.rigor.co.mz/uploaded_files/userfiles/files/free-roblox-clothes_GM431946152.pdfIn PDF document text
- http://www.rigor.co.mz/uploaded_files/userfiles/files/game-coin-master-hack_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
`font_00_sfnt_off00004ad1.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4AD1	24792 bytes
SHA-256: `5fd54a029948546ca3618a50797cc506a41d0226a25044c97236fa00b63eae1a`
`font_01_sfnt_off000083c4.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x83C4	2880 bytes
SHA-256: `10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132`
`font_02_sfnt_off00008dae.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8DAE	18196 bytes
SHA-256: `948bfbd28f908060b86a9c4a078f031a0a7b6f349e372fe1328e9069b1b47d5a`

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