Malicious PDF — malware analysis report

Static analysis result for SHA-256 667983f884e307d2…

MALICIOUS

PDF

42.8 KB Created: 2021-05-11 00:10:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-02
MD5: de7101d980daf2fbbf7fbe4c3e0e2834 SHA-1: 61305868c721dd255202840da181d8b20b1524d0 SHA-256: 667983f884e307d2e07513490063be5c30f389f06e6a9517283445f7c18078eb
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious. It uses a ClickFix paste-and-run lure. 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 clean score 0.0118

Heuristics 5

  • 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.
  • ClickFix social engineering attack high SE_CLICKFIX
    Document instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
  • 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/free-minecraft-texture-packs-java-game-hack PDF link annotation
    • 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000035ee.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x35EE 25968 bytes
SHA-256: 447e3583d97833ec374dc951b18079f39578efa5aa8c0f6800c951423a3687e8
font_01_sfnt_off00007088.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7088 3020 bytes
SHA-256: f1a29adcea636583330be8db4f6466410de551ac48576b9e1aa5c34e2d665a1f
font_02_sfnt_off00007add.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7ADD 2816 bytes
SHA-256: 4555740682277f0055d57b15bd0ba953e5b51415ea3d21c93db391eace072d4f
font_03_sfnt_off000084ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84EE 18520 bytes
SHA-256: 686fb3e1785c5679fc7febae081669fb57112988378368078b360718af0d5a6a

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