Malicious PDF — malware analysis report

Static analysis result for SHA-256 530b3cd0939c9c8c…

MALICIOUS

PDF

47.0 KB Created: 2021-06-03 09:24:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 639216c40f2d19b1a85a461fb523887e SHA-1: 024884c0e177fe6dd5747b7a370e56575ddc900c SHA-256: 530b3cd0939c9c8c18d7b5160bef423c51beeb6e9f4270ced98da7b74e87e933
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to redirector infrastructure and known malicious domains, disguised as game-related content. The heuristic firings indicate the document is designed to lure users to malicious sites, likely for further exploitation or malware delivery. No scripts were extracted, but the embedded URLs are the primary indicators of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

Heuristics 4

  • 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.
  • 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
  • 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.online/app/406889139/how-many-levels-are-in-coin-master-game-hack In PDF document text
    • http://elibrary.perludem.org//repository/coin-master-free-spins-apk_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/free-robux-thumbnail_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/free-robux-app_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/free-roblox-accounts-with-builders-club_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/pokemon-go-free-remote-raid-pass_GM1094591345.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/robux-redeem_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/free-spin-coin-master-hacktoman_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/coin-master-free-pet-food_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/roblox-free-codes-not-used-2021_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/coin-master-free-stuff_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/coin-master-heaven-free-spins-link_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/coin-master-free-spin-2912-2021_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/free-spin-coin-master-link-today_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/how-to-get-free-roebucks-in-roblox_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/roblox-getting-hacked_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/minecraft-windows-10-hacked-client_GM479516143.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/roblox-no-download-hack_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/coin-master-daily-free-spins-haktuts_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/how-to-hack-minecraft-pe_GM479516143.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000051c6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x51C6 25124 bytes
SHA-256: 4498eda08e87524849bbf43bab4918808b5f75e70173179a40a6c178526531f5
font_01_sfnt_off00008b8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B8F 2880 bytes
SHA-256: b053084cafd01c649462d87667ba56c569d6480ce60e7d20ae57ef6124cf178e
font_02_sfnt_off0000957a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x957A 18076 bytes
SHA-256: 54e54f6e61ae990098bb4cdf24a44bcdd14b606a50495af7ec2cc921364cf956

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