PDF malware analysis — malicious · e29ef1df8a2a8d88

MALICIOUS

PDF

35.4 KB Created: 2021-07-09 11:04:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: f988996f34900242dd2123f0153264b9 SHA-1: 54599fe1105c7a0fa76d99f39d6f65d4736c6d26 SHA-256: e29ef1df8a2a8d88018f8ae4ee7406417f3313f6a3f05dda182b5a91acfc270f

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by an ML classifier. The file 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 4

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/431946152/free-roblox-hack-game-hack PDF link annotation
- https://www.knjiznica-oroslavje.hr/files/free-robux-safe_GM431946152.pdfIn PDF document text
- https://www.knjiznica-oroslavje.hr/files/free-robux-hack-generator_GM431946152.pdfIn PDF document text
- http://knjiznica-oroslavje.hr/files/hack-roblox-galaxy-itan_GM431946152.pdfIn PDF document text
- https://www.knjiznica-oroslavje.hr/files/minecraft-client_GM479516143.pdfIn PDF document text
- http://knjiznica-oroslavje.hr/files/free-roblox-shirts-templates_GM431946152.pdfIn PDF document text
- http://knjiznica-oroslavje.hr/files/javascript-free-robux_GM431946152.pdfIn PDF document text
- http://knjiznica-oroslavje.hr/files/coin-master-free-spins-and-coins-link-blogspot_GM406889139.pdfIn PDF document text
- https://www.knjiznica-oroslavje.hr/files/how-to-get-hacked-blocks-in-roblox-build-anything_GM431946152.pdfIn PDF document text
- https://www.knjiznica-oroslavje.hr/files/free-robux-codes-no-human-verification_GM431946152.pdfIn PDF document text
- https://www.knjiznica-oroslavje.hr/files/sb-game-hacker-coin-master_GM406889139.pdfIn PDF document text
- http://knjiznica-oroslavje.hr/files/how-to-get-free-skins-in-minecraft_GM479516143.pdfIn PDF document text
- https://www.knjiznica-oroslavje.hr/files/roblox-hack-no-download-gui_GM431946152.pdfIn PDF document text
- http://knjiznica-oroslavje.hr/files/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
- http://knjiznica-oroslavje.hr/files/how-to-hack-minecraft_GM479516143.pdfIn PDF document text
- https://www.knjiznica-oroslavje.hr/files/free-robux-that-actually-works-2021_GM431946152.pdfIn PDF document text
- https://www.knjiznica-oroslavje.hr/files/free-robux-with-downloading-apps_GM431946152.pdfIn PDF document text
- http://knjiznica-oroslavje.hr/files/roblox-robux-hack-online-2021_GM431946152.pdfIn PDF document text
- https://www.knjiznica-oroslavje.hr/files/como-hackear-coin-master-iphone_GM406889139.pdfIn PDF document text
- http://knjiznica-oroslavje.hr/files/give-me-free-robux_GM431946152.pdfIn PDF document text
- https://www.knjiznica-oroslavje.hr/files/free-robux-app-2021_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_off00003182.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3182	23284 bytes
SHA-256: `4fbfb957fb98aa103576e7442d8338ee52b183cef7817aefdfcfff43caec35d5`
`font_01_sfnt_off000065f8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x65F8	18820 bytes
SHA-256: `cf67562a6930539490549aeb8f0b318a0b45b3e5cb7414ef3283f960707338b6`

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