Malicious PDF — malware analysis report

Static analysis result for SHA-256 5027a2d2e3e342a5…

MALICIOUS

PDF

36.0 KB Created: 2021-05-23 05:48:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: b3b3600a4b9a56fea9cc40e548294483 SHA-1: d96972391bb19c5d5229aa79660c9a41aa455c9a SHA-256: 5027a2d2e3e342a5e4552a04ebf98afec1257245d170ed0d5d1b003b4d9804d5
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/free-minecraft-survival-server-game-hack PDF link annotation
    • http://finettifrs.it/images/how-to-get-free-robux-easy-no-download_GM431946152.pdfIn PDF document text
    • http://finettifrs.it/images/free-robux-roblox-promo-codes_GM431946152.pdfIn PDF document text
    • http://finettifrs.it/images/free-minecraft-account-and-password_GM479516143.pdfIn PDF document text
    • http://finettifrs.it/images/how-to-get-free-spins-on-coin-master-2021-ios_GM406889139.pdfIn PDF document text
    • http://finettifrs.it/images/coin-master-free-daily-spins_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
font_00_sfnt_off0000339e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x339E 25188 bytes
SHA-256: ec3f7634d2f45e575202e573b0764ce7a9bce62982210fcd508ff0cb7e9c105e
font_01_sfnt_off00006c7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C7E 17896 bytes
SHA-256: a416ee995e2fcdad104e8f08570a8c057a7877f0093c65a8eab662d227b30cb8

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