PDF malware analysis — malicious · bb85b311e6913ede

MALICIOUS

PDF

34.1 KB Created: 2021-06-20 11:31:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 3d75ac271a138381ddb1a933bc72ead3 SHA-1: b3420b1232df2b98b8a15ce806d242aa8a600bf0 SHA-256: bb85b311e6913ede3ced828872153840818588f95e285e51143adc87a4b9794b

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.co/app/431946152/click-to-claim-free-robux-game-hack PDF link annotation
- https://www.laxmansartemporium.com/uploaded_files/userfiles/files/how-to-get-to-village-3-in-coin-master_GM406889139.pdfIn PDF document text
- https://www.laxmansartemporium.com/uploaded_files/userfiles/files/roblox-player-speed-hack-script_GM431946152.pdfIn PDF document text
- https://www.laxmansartemporium.com/uploaded_files/userfiles/files/free-robux-com-2021_GM431946152.pdfIn PDF document text
- https://www.laxmansartemporium.com/uploaded_files/userfiles/files/coin-master-coins-free_GM406889139.pdfIn PDF document text
- https://www.laxmansartemporium.com/uploaded_files/userfiles/files/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
- https://www.laxmansartemporium.com/uploaded_files/userfiles/files/free-coins-coin-master-iphone_GM406889139.pdfIn PDF document text
- https://www.laxmansartemporium.com/uploaded_files/userfiles/files/free-minecraft-mods-for-pc_GM479516143.pdfIn PDF document text
- https://www.laxmansartemporium.com/uploaded_files/userfiles/files/minecraft-server-hacks_GM479516143.pdfIn PDF document text
- https://www.laxmansartemporium.com/uploaded_files/userfiles/files/free-robux-only-username-no-human-verification_GM431946152.pdfIn PDF document text
- https://www.laxmansartemporium.com/uploaded_files/userfiles/files/minecraft-apk-free-download_GM479516143.pdfIn PDF document text
- https://www.laxmansartemporium.com/uploaded_files/userfiles/files/coin-master-spin-link-free-download_GM406889139.pdfIn PDF document text
- https://www.laxmansartemporium.com/uploaded_files/userfiles/files/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
- https://www.laxmansartemporium.com/uploaded_files/userfiles/files/robux-hack-2021_GM431946152.pdfIn PDF document text
- https://www.laxmansartemporium.com/uploaded_files/userfiles/files/free-robux-just-enter-username-and-password_GM431946152.pdfIn PDF document text
- https://www.laxmansartemporium.com/uploaded_files/userfiles/files/free-coin-master-spins-blog_GM406889139.pdfIn PDF document text
- https://www.laxmansartemporium.com/uploaded_files/userfiles/files/free-robux-offers_GM431946152.pdfIn PDF document text
- https://www.laxmansartemporium.com/uploaded_files/userfiles/files/master-coin-free-link_GM406889139.pdfIn PDF document text
- https://www.laxmansartemporium.com/uploaded_files/userfiles/files/roblox-promo-codes-free-robux_GM431946152.pdfIn PDF document text
- https://www.laxmansartemporium.com/uploaded_files/userfiles/files/how-do-u-hack-roblox_GM431946152.pdfIn PDF document text
- https://www.laxmansartemporium.com/uploaded_files/userfiles/files/free-robux-without-downloading-apps_GM431946152.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_off00002f15.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2F15	21900 bytes
SHA-256: `d618d470a543285033c713b804af8970f3e2704357da3f0ef2842e393803a567`
`font_01_sfnt_off00005f58.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5F58	19340 bytes
SHA-256: `bd677948be1f30f511506055c6a5f793a0c4f570d30e52b8cca492b4c2ade6df`

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