PDF malware analysis — malicious · 960662a41f8572fc

MALICIOUS

PDF

43.9 KB Created: 2021-05-19 06:45:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: ae4f6f1c5c6237e5f1f8fef9bc6e8e3e SHA-1: e129e49217526b36b92a8eab88d0fb2d1317e76a SHA-256: 960662a41f8572fc64d359a162636595685ca54ecb1c84d521a5247d5e42e296

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 0.9969

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/431946152/free-robux-group-payouts-game-hack PDF link annotation
- https://www.laxmansartemporium.com/uploaded_files/userfiles/files/free-spins-coin-master-generator_GM406889139.pdfIn PDF document text
- https://www.laxmansartemporium.com/uploaded_files/userfiles/files/mcpe-master-coins-hack-download_GM406889139.pdfIn PDF document text
- https://www.laxmansartemporium.com/uploaded_files/userfiles/files/coin-master-hack-2021-app-download_GM406889139.pdfIn PDF document text
- https://www.laxmansartemporium.com/uploaded_files/userfiles/files/coin-master-free-spins-link-2021-download_GM406889139.pdfIn PDF document text
- https://www.laxmansartemporium.com/uploaded_files/userfiles/files/coin-master-rewards-free-spins_GM406889139.pdfIn PDF document text
- https://www.laxmansartemporium.com/uploaded_files/userfiles/files/wurst-18-9_GM479516143.pdfIn PDF document text
- https://www.laxmansartemporium.com/uploaded_files/userfiles/files/coin-master-heaven-free-spins-today_GM406889139.pdfIn PDF document text
- https://www.laxmansartemporium.com/uploaded_files/userfiles/files/how-to-get-free-robux-without-verifying-2021_GM431946152.pdfIn PDF document text
- https://www.laxmansartemporium.com/uploaded_files/userfiles/files/free-coin-master-spins-hack_GM406889139.pdfIn PDF document text
- https://www.laxmansartemporium.com/uploaded_files/userfiles/files/how-do-we-get-free-robux_GM431946152.pdfIn PDF document text
- https://www.laxmansartemporium.com/uploaded_files/userfiles/files/roblox-hack-app_GM431946152.pdfIn PDF document text
- https://www.laxmansartemporium.com/uploaded_files/userfiles/files/free-roblox-printables_GM431946152.pdfIn PDF document text
- https://www.laxmansartemporium.com/uploaded_files/userfiles/files/how-to-get-free-gold-cards-on-coin-master_GM406889139.pdfIn PDF document text
- https://www.laxmansartemporium.com/uploaded_files/userfiles/files/free-robux-com_GM431946152.pdfIn PDF document text
- https://www.laxmansartemporium.com/uploaded_files/userfiles/files/coin-master-apk-hack-download_GM406889139.pdfIn PDF document text
- https://www.laxmansartemporium.com/uploaded_files/userfiles/files/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
- https://www.laxmansartemporium.com/uploaded_files/userfiles/files/clean-master-free-coins-and-spins_GM406889139.pdfIn PDF document text
- https://www.laxmansartemporium.com/uploaded_files/userfiles/files/can-i-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
- https://www.laxmansartemporium.com/uploaded_files/userfiles/files/free-robux-reddit_GM431946152.pdfIn PDF document text
- https://www.laxmansartemporium.com/uploaded_files/userfiles/files/coin-master-free-spin-daily-link_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_off00004adf.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4ADF	26024 bytes
SHA-256: `7600b0eec0a62a867fa7dd7e697d726e1b05b87541d14209221b52471d2bb3cd`
`font_01_sfnt_off00008784.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8784	18856 bytes
SHA-256: `ce567b12c15b2d80af346f88522d5e97efe0146d8ef1a381d9680522b282c106`

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