Malicious PDF — malware analysis report

Static analysis result for SHA-256 eaf21af689cd5d88…

MALICIOUS

PDF

42.0 KB Created: 2021-05-14 03:31:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 1faecd4353151a415604c1871ec7cbbd SHA-1: e6918768132648a8918f9252c0073e7c30f4dc45 SHA-256: eaf21af689cd5d88c78a5bd4a804fef6e60480eba4fd899e3b8eac50d7594208
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors, specifically advertising 'free generator / game hack' content. The document body and embedded links suggest a lure designed to trick users into visiting malicious websites, likely for further exploitation or credential harvesting. While no scripts were directly extracted, the PDF structure and embedded links strongly indicate a malicious intent to redirect users to harmful content.

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/blogspot-coin-master-free-spins-game-hack In PDF document text
    • http://uctovnictvosnv.sk/images/coin-master-free-spins-and-coins-generator_GM406889139.pdfIn PDF document text
    • http://uctovnictvosnv.sk/images/coin-master-free-shield_GM406889139.pdfIn PDF document text
    • http://uctovnictvosnv.sk/images/how-to-scam-on-roblox_GM431946152.pdfIn PDF document text
    • http://uctovnictvosnv.sk/images/robuxhub-net_GM431946152.pdfIn PDF document text
    • http://uctovnictvosnv.sk/images/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://uctovnictvosnv.sk/images/can-you-download-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://uctovnictvosnv.sk/images/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://uctovnictvosnv.sk/images/coin-master-free-spins-only_GM406889139.pdfIn PDF document text
    • http://uctovnictvosnv.sk/images/how-to-hack-coin-master-apkmody_GM406889139.pdfIn PDF document text
    • http://uctovnictvosnv.sk/images/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://uctovnictvosnv.sk/images/how-can-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://uctovnictvosnv.sk/images/how-to-get-a-free-dominus-in-roblox_GM431946152.pdfIn PDF document text
    • http://uctovnictvosnv.sk/images/coin-master-game-free-spin-download_GM406889139.pdfIn PDF document text
    • http://uctovnictvosnv.sk/images/coin-master-hack-apk-download_GM406889139.pdfIn PDF document text
    • http://uctovnictvosnv.sk/images/coin-master-70-spin-link_GM406889139.pdfIn PDF document text
    • http://uctovnictvosnv.sk/images/ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://uctovnictvosnv.sk/images/free-robux-promo-codes-2021_GM431946152.pdfIn PDF document text
    • http://uctovnictvosnv.sk/images/coinmaster-twitter_GM406889139.pdfIn PDF document text
    • http://uctovnictvosnv.sk/images/earn-roblox_GM431946152.pdfIn PDF document text
    • http://uctovnictvosnv.sk/images/how-to-get-free-spins-on-coin-master-2021_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_off0000486c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x486C 24964 bytes
SHA-256: 5fa3a777a96db7f448c7ab3c28af23b16d67699ffbd358882b76acec9f14e150
font_01_sfnt_off00008155.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8155 18464 bytes
SHA-256: af5d8a2e7c6ce5c46c231007036c3c30da92f088fd5d2b237af1a5c438451922

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