Malicious PDF — malware analysis report

Static analysis result for SHA-256 57b71974a0977c0d…

MALICIOUS

PDF

36.1 KB Created: 2021-05-22 14:39:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: cdae5d5f7faf8896ce1d9dc13b2abd2e SHA-1: c05111c9809e453c7e6420a1bbdf507a0acb455e SHA-256: 57b71974a0977c0dbea0bb3a34c26419b6ad4e4feb67b76100083299c5ed28f3
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/how-to-get-free-spins-in-coin-master-game-hack PDF link annotation
    • https://xn--80adfcepoood1a3b.xn--p1ai/images/coin-master-free-spin-today_GM406889139.pdfIn PDF document text
    • https://xn--80adfcepoood1a3b.xn--p1ai/images/sites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://xn--80adfcepoood1a3b.xn--p1ai/images/minecraft-pe_GM479516143.pdfIn PDF document text
    • https://xn--80adfcepoood1a3b.xn--p1ai/images/get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://xn--80adfcepoood1a3b.xn--p1ai/images/how-to-get-coins-on-tiktok-for-free_GM835599320.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_off0000361e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x361E 23964 bytes
SHA-256: 125ec39ca9def31f674976be86b29cada82cccba59105846dea6c1fffc9f480e
font_01_sfnt_off00006c76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C76 18052 bytes
SHA-256: 52b27d49d658c5dd219fe1685a79a71966a386845fdc62a41335e5719e4d5001

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