Malicious PDF — malware analysis report

Static analysis result for SHA-256 7af5023a0abd70e6…

MALICIOUS

PDF

36.6 KB Created: 2021-05-21 00:43:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: fd5ffae9a11a7ee5b602e9872caf5465 SHA-1: 0b8d3e3814a5f1d4880b677dac6801c15ca2d447 SHA-256: 7af5023a0abd70e6acb8fef31b5bcc43950f38ee6cad21a166ea5eee489df5f4
122 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by an ML classifier. It uses a password-protected-archive 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 malicious score 0.9447

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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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/minecraft-hacks-xbox-one-game-hack PDF link annotation
    • https://lita-lb.org/images/offers-for-robux_GM431946152.pdfIn PDF document text
    • https://lita-lb.org/images/roblox-hack-apk_GM431946152.pdfIn PDF document text
    • https://lita-lb.org/images/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • https://lita-lb.org/images/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://lita-lb.org/images/how-to-get-free-spins-on-coin-master-without-verification_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_off0000339c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x339C 25376 bytes
SHA-256: c6136308005a2d2799be7785ca9d3ad5bd48335009be92c411d7ddeb6a63b190
font_01_sfnt_off00006d65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D65 18476 bytes
SHA-256: 02c256a4f31d672ffdf2c78980c9f8d87063a23b9bf8713c78613c8fd45925f8

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