Malicious PDF — malware analysis report

Static analysis result for SHA-256 4fc5fcb051f5420d…

MALICIOUS

PDF

47.5 KB Created: 2021-06-01 20:08:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: c3b8a18965c8658f5c4013b8bb027aaf SHA-1: af04f70884ef8720d321dcb26a19adaa99e5e7a4 SHA-256: 4fc5fcb051f5420d29061d9a26cddb2476556fdb4c226ad9689ac90b2af21bfe
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/how-to-get-free-robux-in-script-game-hack PDF link annotation
    • https://hundt-druck.de/wp-content/uploads/fsqm-files/get-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://hundt-druck.de/wp-content/uploads/fsqm-files/daily-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://hundt-druck.de/wp-content/uploads/fsqm-files/free-robux-websites-no-password_GM431946152.pdfIn PDF document text
    • https://hundt-druck.de/wp-content/uploads/fsqm-files/how-to-get-free-robux-on-roblox-fast-and-easy_GM431946152.pdfIn PDF document text
    • https://hundt-druck.de/wp-content/uploads/fsqm-files/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • https://hundt-druck.de/wp-content/uploads/fsqm-files/minecraft-pe-free-apk_GM479516143.pdfIn PDF document text
    • https://hundt-druck.de/wp-content/uploads/fsqm-files/get-bucks-me-free-robux_GM431946152.pdfIn PDF document text
    • https://hundt-druck.de/wp-content/uploads/fsqm-files/hacks-para-roblox-pc_GM431946152.pdfIn PDF document text
    • https://hundt-druck.de/wp-content/uploads/fsqm-files/roblox-noclip-hack-august-2021_GM431946152.pdfIn PDF document text
    • https://hundt-druck.de/wp-content/uploads/fsqm-files/roblox-how-to-hack-in-your-game-hack-gui_GM431946152.pdfIn PDF document text
    • https://hundt-druck.de/wp-content/uploads/fsqm-files/how-to-use-nexus-to-hack-in-roblox-royale-high_GM431946152.pdfIn PDF document text
    • https://hundt-druck.de/wp-content/uploads/fsqm-files/free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://hundt-druck.de/wp-content/uploads/fsqm-files/free-shirt-download-roblox_GM431946152.pdfIn PDF document text
    • https://hundt-druck.de/wp-content/uploads/fsqm-files/robux-com-free_GM431946152.pdfIn PDF document text
    • https://hundt-druck.de/wp-content/uploads/fsqm-files/how-do-you-get-free-robux-on-games_GM431946152.pdfIn PDF document text
    • https://hundt-druck.de/wp-content/uploads/fsqm-files/top-best-free-stuff-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://hundt-druck.de/wp-content/uploads/fsqm-files/free-obc-roblox_GM431946152.pdfIn PDF document text
    • https://hundt-druck.de/wp-content/uploads/fsqm-files/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://hundt-druck.de/wp-content/uploads/fsqm-files/cheat-engine-noclip-roblox-download_GM431946152.pdfIn PDF document text
    • https://hundt-druck.de/wp-content/uploads/fsqm-files/free-tiktok-hearts_GM835599320.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004db6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4DB6 27384 bytes
SHA-256: 1b8791c0f7745aa1571dc24f409d40b317d44090155d89ddd8ee32559f8a31b6
font_01_sfnt_off00008be3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BE3 2940 bytes
SHA-256: eb230542719c96b42e3fd8bb01e35f13ebd5f02629049da3a58e7fd7607bf48a
font_02_sfnt_off000095f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x95F2 18576 bytes
SHA-256: fad81e21066500fe41035161d32cb6687ae55fe62a36f0faa19a5562e4ddf264

Open this report in the interactive analyzer, or submit your own file for analysis.