Malicious PDF — malware analysis report

Static analysis result for SHA-256 b314e430ad33d6de…

MALICIOUS

PDF

36.5 KB Created: 2021-05-23 03:33:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: c995d2b2fc2552d4082521b054e59b54 SHA-1: 2d1d8a1dad07a6ea98e11eeeae94dedb8bc0dea0 SHA-256: b314e430ad33d6de3d8ed3ea1a6a568b70d58cb7eedebb717ab6de2566379325
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-claim-free-spins-game-hack PDF link annotation
    • https://my-private-intendant.com/images/john-doe-roblox-hacker_GM431946152.pdfIn PDF document text
    • https://my-private-intendant.com/images/coin-master-spin-rewards_GM406889139.pdfIn PDF document text
    • https://my-private-intendant.com/images/roblox-free-roblox_GM431946152.pdfIn PDF document text
    • https://my-private-intendant.com/images/minecraft-114-download_GM479516143.pdfIn PDF document text
    • https://my-private-intendant.com/images/minecraft-free-android_GM479516143.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_off000032c1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x32C1 24076 bytes
SHA-256: 81c986c0d3324a28f4b5983a1bb2ede212ae8629218eada6abf53f7e96ca77bd
font_01_sfnt_off000069f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69F5 19476 bytes
SHA-256: 5085e354df2075c5fe93a093420d05de8b42d943cf6c5858fab10e69b4fd04c4

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