PDF malware analysis — malicious · 99f05e298ca86576

MALICIOUS

PDF

34.3 KB Created: 2021-07-06 18:35:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-26

MD5: 0a184c228e3235ce002cecac3692b4fb SHA-1: 525c07707b07c36ac07611fe0d11cc3da03c393f SHA-256: 99f05e298ca86576bfed31b7de488703a0e413012307a4a5754c6163371394a9

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains a lure for game hacks and free generators, directing users to a known malicious redirector. The ML classifier also flagged this PDF with high confidence. The embedded URL is designed to trick users into downloading potentially malicious content or visiting further compromised sites.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

Heuristics 4

PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK

PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
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
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-spin-link-for-coin-master-game-game-hack In PDF document text
- https://www.vizyonproduction.com/application/uploads/assets/files/coin-master-free-coins-2021_GM406889139.pdfIn PDF document text
- https://www.vizyonproduction.com/application/uploads/assets/files/coin-master-free-spin-link-app_GM406889139.pdfIn PDF document text
- https://www.vizyonproduction.com/application/uploads/assets/files/hacked-client-for-minecraft-bedrock_GM479516143.pdfIn PDF document text
- https://www.vizyonproduction.com/application/uploads/assets/files/free-game-pack-with-google-play-coin-master_GM406889139.pdfIn PDF document text
- https://www.vizyonproduction.com/application/uploads/assets/files/coin-master-hack-tool_GM406889139.pdfIn PDF document text
- https://www.vizyonproduction.com/application/uploads/assets/files/robux-game-com_GM431946152.pdfIn PDF document text
- https://www.vizyonproduction.com/application/uploads/assets/files/how-to-buy-anything-on-roblox-for-free_GM431946152.pdfIn PDF document text
- https://www.vizyonproduction.com/application/uploads/assets/files/coin-master-hack-apk-35-8_GM406889139.pdfIn PDF document text
- https://www.vizyonproduction.com/application/uploads/assets/files/promo-codes-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://www.vizyonproduction.com/application/uploads/assets/files/hacking-websites-for-robux_GM431946152.pdfIn PDF document text
- https://www.vizyonproduction.com/application/uploads/assets/files/roblox-moderators_GM431946152.pdfIn PDF document text
- https://www.vizyonproduction.com/application/uploads/assets/files/giftrobux-com-generator_GM431946152.pdfIn PDF document text
- https://www.vizyonproduction.com/application/uploads/assets/files/free-coin-master-app_GM406889139.pdfIn PDF document text
- https://www.vizyonproduction.com/application/uploads/assets/files/is-there-an-actual-way-to-get-robux-for-free_GM431946152.pdfIn PDF document text
- https://www.vizyonproduction.com/application/uploads/assets/files/roblox-hack-accont_GM431946152.pdfIn PDF document text
- https://www.vizyonproduction.com/application/uploads/assets/files/moonactive-coin-master-free-spins_GM406889139.pdfIn PDF document text
- https://www.vizyonproduction.com/application/uploads/assets/files/get-free-easy-robux-today_GM431946152.pdfIn PDF document text
- https://www.vizyonproduction.com/application/uploads/assets/files/buy-robux-free_GM431946152.pdfIn PDF document text
- https://www.vizyonproduction.com/application/uploads/assets/files/free-robux-survey_GM431946152.pdfIn PDF document text
- https://www.vizyonproduction.com/application/uploads/assets/files/list-of-free-robux-sites_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_off000030ab.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x30AB	22508 bytes
SHA-256: `856ab372ce0af27b730e197e74514b15573d92458deef3f1c57d824ffe1f254a`
`font_01_sfnt_off000062b4.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x62B4	18604 bytes
SHA-256: `f19d54f8b55e9054799c5fe3eb3858f8baa86cd1dd79e15d2a28d3659dcc94a2`

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