PDF malware analysis — malicious · 0b4de61f256a1b57

MALICIOUS

PDF

47.2 KB Created: 2021-06-01 14:01:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: d45bf65e8611b84c95db166b19b813dd SHA-1: afe1713cefec9324c0af223255cf9c6437e18660 SHA-256: 0b4de61f256a1b573c8e65cafcabf1b36381e40bcf54c04ba343f4ff1095b8ce

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 0.9769

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 https://netcdn.xyz/app/431946152/pbb-hacked-roblox-game-hack PDF link annotation
- https://speakonline.dk/wp-content/uploads/fsqm-files/how-to-get-free-robux-on-iphone-no-human-verification_GM431946152.pdfIn PDF document text
- https://speakonline.dk/wp-content/uploads/fsqm-files/roblox-fun-com-free-robux_GM431946152.pdfIn PDF document text
- https://speakonline.dk/wp-content/uploads/fsqm-files/earn-free-robux_GM431946152.pdfIn PDF document text
- https://speakonline.dk/wp-content/uploads/fsqm-files/free-robux-hack-generator_GM431946152.pdfIn PDF document text
- https://speakonline.dk/wp-content/uploads/fsqm-files/external-roblox-jailbreak-hack-2021-download_GM431946152.pdfIn PDF document text
- https://speakonline.dk/wp-content/uploads/fsqm-files/roblox-hack-extreme-nijecotr_GM431946152.pdfIn PDF document text
- https://speakonline.dk/wp-content/uploads/fsqm-files/promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
- https://speakonline.dk/wp-content/uploads/fsqm-files/minecraft-hacks-wurst_GM479516143.pdfIn PDF document text
- https://speakonline.dk/wp-content/uploads/fsqm-files/free-minecraft-capes_GM479516143.pdfIn PDF document text
- https://speakonline.dk/wp-content/uploads/fsqm-files/how-to-start-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
- https://speakonline.dk/wp-content/uploads/fsqm-files/real-minecraft-for-free_GM479516143.pdfIn PDF document text
- https://speakonline.dk/wp-content/uploads/fsqm-files/free-robux-games-on-roblox-link_GM431946152.pdfIn PDF document text
- https://speakonline.dk/wp-content/uploads/fsqm-files/rblx-city-free-robux_GM431946152.pdfIn PDF document text
- https://speakonline.dk/wp-content/uploads/fsqm-files/is-minecraft-free-on-nintendo-switch_GM479516143.pdfIn PDF document text
- https://speakonline.dk/wp-content/uploads/fsqm-files/roblox-help-free-robux_GM431946152.pdfIn PDF document text
- https://speakonline.dk/wp-content/uploads/fsqm-files/free-tiktok-views_GM835599320.pdfIn PDF document text
- https://speakonline.dk/wp-content/uploads/fsqm-files/free-followers-on-tiktok_GM835599320.pdfIn PDF document text
- https://speakonline.dk/wp-content/uploads/fsqm-files/minecraft-iphone-free_GM479516143.pdfIn PDF document text
- https://speakonline.dk/wp-content/uploads/fsqm-files/free-coin-master-links_GM406889139.pdfIn PDF document text
- https://speakonline.dk/wp-content/uploads/fsqm-files/freer-pro-tiktok-fans_GM835599320.pdfIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_004_off00004f49.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4F49	25548 bytes
SHA-256: `cb116718e1979a9d6b111c68d9514b77e972134c1ff26560ebf47f9187e08440`
`font_01_sfnt_off00008aaf.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8AAF	2984 bytes
SHA-256: `889cfc2fd0afa9ea114d6666204c6ce0548d0aae2cba345827d317498c4c06bc`
`font_02_sfnt_off000094db.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x94DB	18512 bytes
SHA-256: `15de359abdb36cab7bfb7d874a76477a86c4ad7d1913e08ad2e665866b086b8a`

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