Malicious PDF — malware analysis report

Static analysis result for SHA-256 f07db942fdd3300d…

MALICIOUS

PDF

43.0 KB Created: 2021-05-13 02:11:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 705f661d73567332a836059e05657277 SHA-1: 6b1b0db31592564c9c2df960eadbd93f78b3bb7d SHA-256: f07db942fdd3300d65fe71ff6de08d1a65d1d748c0664c161acd9ee49f118aaa
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that lead to known malicious redirectors, disguised as offers for free game currency or hacks. The document body and embedded links suggest a social engineering lure to trick users into visiting potentially harmful websites. No scripts were extracted, but the presence of malicious redirector links and the lure indicate a phishing or scam attempt.

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/free-spins-on-coin-master-link-game-hack In PDF document text
    • http://huounaixunghe.com/images/free-robux-websites-no-human-verification_GM431946152.pdfIn PDF document text
    • http://huounaixunghe.com/images/coin-master-hack-mod-apk-unlimited-spins_GM406889139.pdfIn PDF document text
    • http://huounaixunghe.com/images/free-robux-cards_GM431946152.pdfIn PDF document text
    • http://huounaixunghe.com/images/coin-master-game-free-spin-download_GM406889139.pdfIn PDF document text
    • http://huounaixunghe.com/images/free-roblox-card_GM431946152.pdfIn PDF document text
    • http://huounaixunghe.com/images/free-robux-websites-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://huounaixunghe.com/images/free-robux-exe_GM431946152.pdfIn PDF document text
    • http://huounaixunghe.com/images/is-minecraft-bedrock-edition-free_GM479516143.pdfIn PDF document text
    • http://huounaixunghe.com/images/free-robux-no-survey-or-human-verification_GM431946152.pdfIn PDF document text
    • http://huounaixunghe.com/images/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
    • http://huounaixunghe.com/images/robux-now_GM431946152.pdfIn PDF document text
    • http://huounaixunghe.com/images/robux-games_GM431946152.pdfIn PDF document text
    • http://huounaixunghe.com/images/coin-master-hack-com_GM406889139.pdfIn PDF document text
    • http://huounaixunghe.com/images/www-bandicam-com-free-robux_GM431946152.pdfIn PDF document text
    • http://huounaixunghe.com/images/minecraft-bedrock-download_GM479516143.pdfIn PDF document text
    • http://huounaixunghe.com/images/free-robux-generator-no-verification_GM431946152.pdfIn PDF document text
    • http://huounaixunghe.com/images/coin-master-free-spin-generator-without-human-verification_GM406889139.pdfIn PDF document text
    • http://huounaixunghe.com/images/coin-master-32-android-mod-hack-apk-download_GM406889139.pdfIn PDF document text
    • http://huounaixunghe.com/images/coin-master-hack-ios-2021_GM406889139.pdfIn PDF document text
    • http://huounaixunghe.com/images/minecraft-windows-10-edition-hacks_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004941.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4941 26648 bytes
SHA-256: 94829776454a6015ac0fbed81e19a95b5fa7191ddf4025c6ead00f461087ba1d
font_01_sfnt_off000086a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86A7 18056 bytes
SHA-256: 892ebf3b86ae534fd3f474e2c239da2a9bb4dc91f8225dc09222a78aadec1336

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