Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d531cfa7b138991…

MALICIOUS

PDF

21.7 KB Created: 2021-05-24 19:07:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 438efff800115a00935d0eb3dc1850f0 SHA-1: 72ed99388f31f2c96d2c0e0a2e9e7ef88265f628 SHA-256: 4d531cfa7b138991a3e37e765aa197c5568f61f693ee5da135f3d94bef48edb6
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to known malicious infrastructure, disguised as game hacks or generators. The document body explicitly mentions 'Free Minecraft Skin Maker' and 'CLICK HERE TO ACCESS MINECRAFT GENERATOR', reinforcing the lure. The ML classifier also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9226

Heuristics 3

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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-skin-maker-game-hack In PDF document text
    • http://balitgetas.co.id/pustaka/repository/coin-master-hack-without-root_GM406889139.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/coin-master-free-spins-and-coins-app-download_GM406889139.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/huskybuscom-free-robux_GM431946152.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/robux-free-co_GM431946152.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/real-hack-for-coin-master_GM406889139.pdfIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003450.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3450 12886 bytes
SHA-256: 5fb1cedc57c506aba1a899e014c5aa7f626f0b6563a8dfd207fd129b0470438f

Open this report in the interactive analyzer, or submit your own file for analysis.