PDF malware analysis — malicious · 5740db21436c3e27

MALICIOUS

PDF

33.8 KB Created: 2021-06-19 09:35:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: 5db1e388fd67008aa3dd3102f09cb6c3 SHA-1: 218c69d155d1da52c922cbf366143c098ee7b460 SHA-256: 5740db21436c3e27a767323faa8f98bd1dbcce6815975e48407bba9b773b9596

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-robuxs-hack-2021-game-hack PDF link annotation
- http://tc-kulmbach.de/images/minecraft-images-free_GM479516143.pdfIn PDF document text
- http://tc-kulmbach.de/images/free-coins-and-spins-coin-master-2021_GM406889139.pdfIn PDF document text
- http://tc-kulmbach.de/images/coin-master-hacksco_GM406889139.pdfIn PDF document text
- http://tc-kulmbach.de/images/free-robux-android-apps_GM431946152.pdfIn PDF document text
- http://tc-kulmbach.de/images/free-robux-accounts-2021_GM431946152.pdfIn PDF document text
- http://tc-kulmbach.de/images/free-best-roblox-exploits_GM431946152.pdfIn PDF document text
- http://tc-kulmbach.de/images/roblox-hacked-accounts-list_GM431946152.pdfIn PDF document text
- http://tc-kulmbach.de/images/female-hacker-roblox_GM431946152.pdfIn PDF document text
- http://tc-kulmbach.de/images/tlcharger-emperor-logiciel-hack-roblox_GM431946152.pdfIn PDF document text
- http://tc-kulmbach.de/images/minecraft-building-hacks_GM479516143.pdfIn PDF document text
- http://tc-kulmbach.de/images/www-free-robux-com_GM431946152.pdfIn PDF document text
- http://tc-kulmbach.de/images/how-to-hack-robux-2021_GM431946152.pdfIn PDF document text
- http://tc-kulmbach.de/images/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
- http://tc-kulmbach.de/images/roblox-murder-mystery-cheats_GM431946152.pdfIn PDF document text
- http://tc-kulmbach.de/images/free-roblox-hats-3_GM431946152.pdfIn PDF document text
- http://tc-kulmbach.de/images/roblox-sharkbite-free-boats-script_GM431946152.pdfIn PDF document text
- http://tc-kulmbach.de/images/free-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
- http://tc-kulmbach.de/images/ipad-roblox-cheats_GM431946152.pdfIn PDF document text
- http://tc-kulmbach.de/images/how-to-get-free-robux-not-a-scam_GM431946152.pdfIn PDF document text
- http://tc-kulmbach.de/images/how-to-get-free-tiktok-likes_GM835599320.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_off00002e50.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2E50	21932 bytes
SHA-256: `1cff902d069faa07617fd3257052a3e0995861a6f23a2f2084d018a0d3ff4ac4`
`font_01_sfnt_off00005ecc.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5ECC	19100 bytes
SHA-256: `1118fa2fd1c653ce635140f7cf5e4774ef8e2fb3c43ac6945261911f21bac0c2`

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