PDF malware analysis — malicious · 667d8fc65928d8a6

MALICIOUS

PDF

33.7 KB Created: 2021-06-19 05:44:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: 5d24aa174e2680f457765fe505d258ca SHA-1: 237c311408c0fa3b0cf40f7252734cdbaa86929e SHA-256: 667d8fc65928d8a6a1c2b033f2e75c8a91a96b241d0359e0cdc0fa1a43fe1426

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

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.co/app/431946152/free-robux-web-page-game-hack PDF link annotation
- http://klinkeridee.de/images/daily-free-spin-coin-master-link_GM406889139.pdfIn PDF document text
- http://klinkeridee.de/images/minecraft-bedrock-edition-pc-download-free_GM479516143.pdfIn PDF document text
- http://klinkeridee.de/images/free-tiktok-followers_GM835599320.pdfIn PDF document text
- http://klinkeridee.de/images/archery-master-3d-hack-unlimited-coins-cheats_GM406889139.pdfIn PDF document text
- http://klinkeridee.de/images/coin-master-levels_GM406889139.pdfIn PDF document text
- http://klinkeridee.de/images/free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
- http://klinkeridee.de/images/minecraft-realms-free-codes_GM479516143.pdfIn PDF document text
- http://klinkeridee.de/images/daily-free-spins-coin-master_GM406889139.pdfIn PDF document text
- http://klinkeridee.de/images/free-tiktok-likes-generator_GM835599320.pdfIn PDF document text
- http://klinkeridee.de/images/how-to-get-minecraft-for-free-ios_GM479516143.pdfIn PDF document text
- http://klinkeridee.de/images/how-to-hack-roblox-wikihow_GM431946152.pdfIn PDF document text
- http://klinkeridee.de/images/how-to-get-free-robux-2-steps_GM431946152.pdfIn PDF document text
- http://klinkeridee.de/images/free-tiktok-followers-instantly_GM835599320.pdfIn PDF document text
- http://klinkeridee.de/images/robux-free-com_GM431946152.pdfIn PDF document text
- http://klinkeridee.de/images/microsoft-free-robux_GM431946152.pdfIn PDF document text
- http://klinkeridee.de/images/como-conseguir-robux-hack-2021_GM431946152.pdfIn PDF document text
- http://klinkeridee.de/images/how-to-get-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
- http://klinkeridee.de/images/how-to-get-minecraft-pe-for-free_GM479516143.pdfIn PDF document text
- http://klinkeridee.de/images/robux-online_GM431946152.pdfIn PDF document text
- http://klinkeridee.de/images/free-robux-mod_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_off00002c88.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2C88	22660 bytes
SHA-256: `7aebb3d24c1e425cb92c74d8fedd097f7f49e49ea07f9518d9bc529edfa65677`
`font_01_sfnt_off00005f49.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5F49	18880 bytes
SHA-256: `54e60d6c87563f712cefd84eb3d71f0e0516b61052351f87ade93ea5d1113800`

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