Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ba51246e6c5921f…

MALICIOUS

PDF

38.6 KB Created: 2021-05-21 16:00:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 46429bacff86cacad2a46d3cf67f665e SHA-1: 99ca07ab31982bbe5283e97ad3590d3c750c4dcf SHA-256: 9ba51246e6c5921f805a79dd20477051299a913793031840d01e0123f5b3d82d
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 0.9476

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/hacking-apps-for-roblox-game-hack PDF link annotation
    • https://www.fenews.co.uk/images/blox-land-free-robux_GM431946152.pdfIn PDF document text
    • https://www.fenews.co.uk/images/was-minecraft-ever-free_GM479516143.pdfIn PDF document text
    • https://www.fenews.co.uk/images/free-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.fenews.co.uk/images/how-do-we-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.fenews.co.uk/images/coin-master-15-free-spin-link-today_GM406889139.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003366.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3366 29272 bytes
SHA-256: 0f9c70dd53a796baabf3f01546cceda3048f6503857ed21c4f8b61131cb232aa
font_01_sfnt_off000073ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73CE 18932 bytes
SHA-256: a12a900017875743d46ad83be25c63e25fa00e3014bd6d438c4b8f248ab77b0b

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