Malicious PDF — malware analysis report

Static analysis result for SHA-256 f820a8f955f1bd14…

MALICIOUS

PDF

38.4 KB Created: 2021-05-21 20:40:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 9bc388569ad8006277287e849d0d5bda SHA-1: c48e77f80ba67b4a42a696d944dd04e3433ce41e SHA-256: f820a8f955f1bd14a47f8053ece1e0af9b14ae7d9691cf43b0cf65d6d94a4d46
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to URLs associated with game hacks and generators, a common lure for phishing or malware distribution. The ML classifier also flagged this PDF as malicious. The embedded links likely lead to a second-stage download or exploit.

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/479516143/how-to-download-minecraft-for-free-on-pc-game-hack PDF link annotation
    • http://zercalo.org/images/free-robux-quiz_GM431946152.pdfIn PDF document text
    • http://zercalo.org/images/coin-master-free-spins-hack-link_GM406889139.pdfIn PDF document text
    • http://zercalo.org/images/how-to-get-free-skins-in-roblox_GM431946152.pdfIn PDF document text
    • http://zercalo.org/images/how-do-i-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://zercalo.org/images/coin-master-tricks_GM406889139.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_off0000322e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x322E 29924 bytes
SHA-256: 4a9c5d4fc7401c96138975346eb4d390f4123a3733c8c8e95a561603c26337fa
font_01_sfnt_off000074a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74A7 18444 bytes
SHA-256: 9e3148d8479467241e454dad7f95496d0753043299a483a1afd63e9d4426fe5d

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