Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4ed2ec9b23fb2a6…

MALICIOUS

PDF

41.4 KB Created: 2021-05-14 18:46:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 7513b63222e3db13aff7904f5448923a SHA-1: 9dcf8d0831dc895276ff630ee630f422a8284891 SHA-256: d4ed2ec9b23fb2a6f91f0c079114ab51bd2ab54981162b026cdd74387e26f0fe
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links designed as lures, specifically referencing 'free generator' and 'game hack' to entice users. One critical heuristic identified a link to known malicious redirector infrastructure at https://netcdn.xyz/app/406889139/get-coin-master-spins-free-game-hack. The document body, though partially corrupted, also contains this URL, reinforcing the malicious intent. The presence of multiple embedded URLs suggests a phishing or scam attempt, likely leading to further malicious content or downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.xyz/app/406889139/get-coin-master-spins-free-game-hack In PDF document text
    • http://gieldapracy.pl/images/coinmaster-blogspot_GM406889139.pdfIn PDF document text
    • http://gieldapracy.pl/images/how-to-hack-roblox_GM431946152.pdfIn PDF document text
    • http://gieldapracy.pl/images/earn-free-robux-for-roblox_GM431946152.pdfIn PDF document text
    • http://gieldapracy.pl/images/minecraft-ps4-free_GM479516143.pdfIn PDF document text
    • http://gieldapracy.pl/images/minecraft-xray-hack_GM479516143.pdfIn PDF document text
    • http://gieldapracy.pl/images/minecraft-free-download-chromebook_GM479516143.pdfIn PDF document text
    • http://gieldapracy.pl/images/coin-master-free-coins_GM406889139.pdfIn PDF document text
    • http://gieldapracy.pl/images/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://gieldapracy.pl/images/www-free-robux_GM431946152.pdfIn PDF document text
    • http://gieldapracy.pl/images/hack-coin-master-8-ball-pool_GM406889139.pdfIn PDF document text
    • http://gieldapracy.pl/images/free-robux-app-2021_GM431946152.pdfIn PDF document text
    • http://gieldapracy.pl/images/coin-master-gold-cards-free-2021_GM406889139.pdfIn PDF document text
    • http://gieldapracy.pl/images/coin-master-hack-tool-v1-9-download-free_GM406889139.pdfIn PDF document text
    • http://gieldapracy.pl/images/free-robux-with-no-human-verification_GM431946152.pdfIn PDF document text
    • http://gieldapracy.pl/images/free-spins-coin-master-links-blogspot_GM406889139.pdfIn PDF document text
    • http://gieldapracy.pl/images/coin-master-free_GM406889139.pdfIn PDF document text
    • http://gieldapracy.pl/images/roblox-cheat_GM431946152.pdfIn PDF document text
    • http://gieldapracy.pl/images/www-coin-master-hack-com_GM406889139.pdfIn PDF document text
    • http://gieldapracy.pl/images/today-coin-master-spin-free_GM406889139.pdfIn PDF document text
    • http://gieldapracy.pl/images/legitimate-coin-master-free-spins-apk_GM406889139.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
stream_003_off0000484d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x484D 24536 bytes
SHA-256: 6fe2ef956896157e046ad04cf1ed53f9d6f585272032f42e0305c5875aef2fd8
font_01_sfnt_off00008077.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8077 17884 bytes
SHA-256: 876927319d3d02f2246654e6bcbdf62d71497dcf4510b2be4e7f27a5ee8d82be

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