Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac0a54ec96c075a5…

MALICIOUS

PDF

35.7 KB Created: 2021-05-25 07:32:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 2ac5637592a78b1cfc94837a57502c1c SHA-1: 25796e5b9a235d17b4cafa3d6bea65d19a357485 SHA-256: ac0a54ec96c075a58764f5b9c4e697f1caccbb22279bb173e049025fa4053f5c
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 0.9648

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/minecraft-java-edition-redeem-code-free-2021-game-hack PDF link annotation
    • https://liftkos.com/images/get-free-robux-com_GM431946152.pdfIn PDF document text
    • https://liftkos.com/images/roblox-games-with-free-vip-servers_GM431946152.pdfIn PDF document text
    • https://liftkos.com/images/can-you-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • https://liftkos.com/images/50-000-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://liftkos.com/images/best-site-for-free-coin-master_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_off000030a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30A1 24664 bytes
SHA-256: b3a016b71236510b96b857be988b27f95595cc0c8f502a4d6ca7eccdac97c0b7
font_01_sfnt_off00006864.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6864 18824 bytes
SHA-256: 3e84327372ede1fb0dd75240746e2dc46639f78069d280fe972667d8e0b4261e

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