Malicious PDF — malware analysis report

Static analysis result for SHA-256 c4766bbbc9996809…

MALICIOUS

PDF

39.8 KB Created: 2021-05-20 18:05:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: bb0daa5f4ae2cad9901b7fb1b2e3d504 SHA-1: 90a68a6ca90131ead0e183a29080ecb155157da0 SHA-256: c4766bbbc9996809266827c354a79125a9a5fa0e611767af8332dd393b4d794b
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 0.8060

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/479516143/is-minecraft-java-edition-free-game-hack PDF link annotation
    • https://www.polyfin.de/images/how-to-get-free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • https://www.polyfin.de/images/how-to-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • https://www.polyfin.de/images/coin-master-free-food_GM406889139.pdfIn PDF document text
    • https://www.polyfin.de/images/orewards-com-free-robux_GM431946152.pdfIn PDF document text
    • https://www.polyfin.de/images/best-minecraft-hacked-client_GM479516143.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_002_off00003584.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3584 25648 bytes
SHA-256: c5299105db1c0925f5074c3adff87f03052c62a8a76cb58ebddfaee0b3c9b2a8
font_01_sfnt_off00007064.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7064 2940 bytes
SHA-256: eb230542719c96b42e3fd8bb01e35f13ebd5f02629049da3a58e7fd7607bf48a
font_02_sfnt_off00007a73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A73 18164 bytes
SHA-256: 781be49a7702cf06049b723b9768b43598e981f21f4500b8f56603e8064b4811

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