Malicious PDF — malware analysis report

Static analysis result for SHA-256 ade965afdd001ee1…

MALICIOUS

PDF

36.0 KB Created: 2021-05-21 20:37:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-23
MD5: fea19a1685c807530295782ca686dba2 SHA-1: b017ca1693d5da0277015d1226274ea313b60bc1 SHA-256: ade965afdd001ee1991ee0e2c97e4c8c0f95c13e4091e1fe7a78222e4c880cba
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 0.9492

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/406889139/coin-master-free-spins-2021-game-hack PDF link annotation
    • http://www.anies.eu/images/coin-master-daily-free-spin-and-coin-link_GM406889139.pdfIn PDF document text
    • http://www.anies.eu/images/free-spins-for-coin-master-on-1-19-19_GM406889139.pdfIn PDF document text
    • http://www.anies.eu/images/free-game-pack-coin-master_GM406889139.pdfIn PDF document text
    • http://www.anies.eu/images/roblox-free-pets_GM431946152.pdfIn PDF document text
    • http://www.anies.eu/images/hackear-coin-master-2021_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
stream_002_off00003484.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3484 24172 bytes
SHA-256: 2cc1d4526639fac9be4765fb71c7e9f69de8ecddf90d6fb9f7242867439c2953
font_01_sfnt_off00006b5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B5C 18288 bytes
SHA-256: 9f7609fba99e53c6baa99bb04d1c7e3f9b7167131c1520eb2a413cdab4a14871

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