Malicious PDF — malware analysis report

Static analysis result for SHA-256 ef71f2145d4aa437…

MALICIOUS

PDF

32.2 KB Created: 2021-07-21 06:36:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: f6463b2c8cbfa6faae81f1a601958246 SHA-1: 1da385edadffcda067af412748c8ed30a910312f SHA-256: ef71f2145d4aa437206db503a15b3afbb4e41541ab7ab8d85a9cebacb12d83f9
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 0.9900

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.tw/app/479516143/minecraft-windows-10-free-code-game-hack PDF link annotation
    • https://contentwriters.pk/wp-content/uploads/fsqm-files/free-minecraft-games-for-kids_GM479516143.pdfIn PDF document text
    • https://contentwriters.pk/wp-content/uploads/fsqm-files/free-minecraft-alts_GM479516143.pdfIn PDF document text
    • https://contentwriters.pk/wp-content/uploads/fsqm-files/get-free-tiktok-likes_GM835599320.pdfIn PDF document text
    • https://contentwriters.pk/wp-content/uploads/fsqm-files/minecraft-classic-free_GM479516143.pdfIn PDF document text
    • https://contentwriters.pk/wp-content/uploads/fsqm-files/free-robux-gift-card-codes_GM431946152.pdfIn PDF document text
    • https://contentwriters.pk/wp-content/uploads/fsqm-files/rbxfree-com-free-robux_GM431946152.pdfIn PDF document text
    • https://contentwriters.pk/wp-content/uploads/fsqm-files/is-tiktok-free_GM835599320.pdfIn PDF document text
    • https://contentwriters.pk/wp-content/uploads/fsqm-files/roblox-hack-generator_GM431946152.pdfIn PDF document text
    • https://contentwriters.pk/wp-content/uploads/fsqm-files/how-to-get-free-robux-2021-easy_GM431946152.pdfIn PDF document text
    • https://contentwriters.pk/wp-content/uploads/fsqm-files/how-to-get-minecraft-for-free-on-iphone_GM479516143.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.

FilenameKindSourceSize
font_00_sfnt_off00002aa1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2AA1 22204 bytes
SHA-256: 9baf8e41ee759e7b613ff93e9f4337a935ba48d66b7f94eb5e7487efed32e1eb
font_01_sfnt_off00005b04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B04 18524 bytes
SHA-256: 61f4e129dbb086a6f9797ef369c55cdd3b58d633037fca8f4f59eaf5785788a4

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