Malicious PDF — malware analysis report

Static analysis result for SHA-256 8cf2a9146599a3ef…

MALICIOUS

PDF

35.7 KB Created: 2021-05-24 17:31:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 4415668fd251ad07efcbd9a929bdc3c0 SHA-1: 885654dcb8964c4a3c1c6322aac334929fa00577 SHA-256: 8cf2a9146599a3ef3c8e2412f8a3deb2c45c0cad8e35093574782823679b305b
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-severity heuristic firing for a game hack redirect lure, pointing to a suspicious URL. The document body also contains similar lures and multiple other URLs that likely lead to malicious content or further downloads. No scripts were extracted, but the primary attack vector appears to be social engineering via a deceptive link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

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/how-to-get-hacks-on-minecraft-game-hack PDF link annotation
    • https://pustaka.stie-pembangunan.ac.id/repository/free-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • https://pustaka.stie-pembangunan.ac.id/repository/coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://pustaka.stie-pembangunan.ac.id/repository/hack-to-protect-village-on-coin-master_GM406889139.pdfIn PDF document text
    • https://pustaka.stie-pembangunan.ac.id/repository/toolbox-premium-apk_GM479516143.pdfIn PDF document text
    • https://pustaka.stie-pembangunan.ac.id/repository/roblox-girl-avatar_GM431946152.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
font_00_sfnt_off00003251.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3251 24956 bytes
SHA-256: 591ac505e737b7d34e9a3418d5004f8959af2410e0199b0651ad03f6895a7ebb
font_01_sfnt_off00006ad8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AD8 18044 bytes
SHA-256: 9f1e79a3b07781afcdd90921eb79530491bd6e36a063b246dd64f6dc9a4bd67a

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