Malicious PDF — malware analysis report

Static analysis result for SHA-256 edd83877412b282d…

MALICIOUS

PDF

37.8 KB Created: 2021-05-23 09:04:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 87893e662a8bc7521a730a562dc6efda SHA-1: b78daded6128363336633b0a8817931d234c69ce SHA-256: edd83877412b282dbf9821d56d07cd31d4fe8323dfe8fda16ddb45b76b62263a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to malicious redirectors, specifically advertising 'free Robux' or 'game hacks' to entice users. The embedded URL 'https://netcdn.xyz/app/431946152/get-free-robux-no-human-verification-game-hack' is flagged as a known malicious redirector. The document body and embedded artifacts suggest a lure for potentially unwanted downloads or further malicious content. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9407

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/431946152/get-free-robux-no-human-verification-game-hack In PDF document text
    • http://domaizdereva24.ru/images/free-views-tiktok_GM835599320.pdfIn PDF document text
    • http://domaizdereva24.ru/images/minecraft-pe-free-download-android_GM479516143.pdfIn PDF document text
    • http://domaizdereva24.ru/images/how-to-change-your-username-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://domaizdereva24.ru/images/how-to-get-minecraft-pocket-edition-for-free_GM479516143.pdfIn PDF document text
    • http://domaizdereva24.ru/images/roblox-free-robux-no-verification_GM431946152.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_002_off0000349a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x349A 25796 bytes
SHA-256: 705a763454ff10ff0b0a148fc2c4973aaf1b931197659cc5329282e719c107fe
font_01_sfnt_off000070f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70F5 18860 bytes
SHA-256: 77094cb8e4b41d81131149df95963a95cd1356d500cc75fcdf894a2f9afc6be7

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