Malicious PDF — malware analysis report

Static analysis result for SHA-256 27392c5fa1329396…

MALICIOUS

PDF

51.7 KB Created: 2021-05-20 02:25:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 0bfede5154109a2f3bbc0f123a98bac3 SHA-1: 87c7921484edc464ce79438594198ff132894c39 SHA-256: 27392c5fa13293969e602e13988312c9838cd730c2521301e8b0f2d89eb62aa7
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains multiple links to known malicious redirectors, disguised as "free generator" or "game hack" lures. The embedded URLs, such as https://netcdn.xyz/app/406889139/coin-master-hack-spin-ios-game-hack, are designed to lead users to potentially harmful content or further malicious downloads. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly indicate a malicious redirector workflow, likely intended to deliver a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8646

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/coin-master-hack-spin-ios-game-hack In PDF document text
    • http://pesok-rk.ru/images/coin-master-free-spins-and-coins-daily-links_GM406889139.pdfIn PDF document text
    • http://pesok-rk.ru/images/coin-master-free-spins-daily-1-ga_GM406889139.pdfIn PDF document text
    • http://pesok-rk.ru/images/coin-master-free-coins-and-spins-today_GM406889139.pdfIn PDF document text
    • http://pesok-rk.ru/images/coin-master-codes_GM406889139.pdfIn PDF document text
    • http://pesok-rk.ru/images/coin-master-free-spons-apk-2021_GM406889139.pdfIn PDF document text
    • http://pesok-rk.ru/images/robux-online_GM431946152.pdfIn PDF document text
    • http://pesok-rk.ru/images/free-minecraft-java-edition-codes_GM479516143.pdfIn PDF document text
    • http://pesok-rk.ru/images/rbx-land-free-robux_GM431946152.pdfIn PDF document text
    • http://pesok-rk.ru/images/earn-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://pesok-rk.ru/images/give-me-free-robux_GM431946152.pdfIn PDF document text
    • http://pesok-rk.ru/images/coin-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://pesok-rk.ru/images/free-daily-coin-master-coins_GM406889139.pdfIn PDF document text
    • http://pesok-rk.ru/images/free-robux-legit_GM431946152.pdfIn PDF document text
    • http://pesok-rk.ru/images/javascript-free-robux_GM431946152.pdfIn PDF document text
    • http://pesok-rk.ru/images/get-gold-coin-master-village-hack_GM406889139.pdfIn PDF document text
    • http://pesok-rk.ru/images/coin-master-cards-hack-2021_GM406889139.pdfIn PDF document text
    • http://pesok-rk.ru/images/hacked-roblox-accounts-list_GM431946152.pdfIn PDF document text
    • http://pesok-rk.ru/images/minecraft-free-download-pc_GM479516143.pdfIn PDF document text
    • http://pesok-rk.ru/images/noob-vs-pro-vs-hacker-vs-god-minecraft_GM479516143.pdfIn PDF document text
    • http://pesok-rk.ru/images/free-minecraft-codes_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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004a8a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A8A 33100 bytes
SHA-256: e4bee02084214ea42d7fd73027a4b349e9db0f82166a77643228fa15f6e2f43f
font_01_sfnt_off0000904a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x904A 4192 bytes
SHA-256: 48322d1406e99725f27f887bf5963d95975ec8d3e52bb52d4e34f3c5826a9e20
font_02_sfnt_off00009ea4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9EA4 2788 bytes
SHA-256: 6fd7c7f447d66842f81aa8cf197935b17f22157d0c7e9f95622df1b5b4ddf530
font_03_sfnt_off0000a893.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA893 17892 bytes
SHA-256: 8a2199a6fb9e6551992738fdb7d2625a8f143b5a9fef4499610b6e02eb0e5450

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