Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7b9378c14d234ab…

MALICIOUS

PDF

35.9 KB Created: 2021-05-22 08:33:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 3f28035b3466d1298925ff5403f5b434 SHA-1: abe170c9e612b0dc3c59eb178a7a5fbca085e36c SHA-256: b7b9378c14d234abaf16cf3ec568821511765925a9bbec7d76508ded021f6527
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/479516143/classic-minecraft-net-hacks-game-hack PDF link annotation
    • https://privatearrangements.co.nz/public/files/free-spin-coin-master-link-download_GM406889139.pdfIn PDF document text
    • https://privatearrangements.co.nz/public/files/is-coin-master-free_GM406889139.pdfIn PDF document text
    • https://privatearrangements.co.nz/public/files/coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • https://privatearrangements.co.nz/public/files/free-spins-coin-master-2021-today_GM406889139.pdfIn PDF document text
    • https://privatearrangements.co.nz/public/files/free-minecraft-account-and-password_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_off000033cf.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x33CF 25144 bytes
SHA-256: 79b865351a14e169d574c36a97bce35b5645ce936edf71b155b3b1b3e2602aa7
font_01_sfnt_off00006c89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C89 17812 bytes
SHA-256: 06eb0692cb0ff670c8084f221f19fc536b6b0c4a84b00058b05a05adc7fae17c

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