Malicious PDF — malware analysis report

Static analysis result for SHA-256 182b97f1f39290b8…

MALICIOUS

PDF

42.5 KB Created: 2021-05-15 01:54:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 95df8a354a81660fde3684906c29ddad SHA-1: 78ab2065a3fbd9782ac419d8bfb24c18c696a23d SHA-256: 182b97f1f39290b8499ce658626a01be6b387dac92e9b8e679d486acd6107320
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors, specifically targeting users interested in game-related cheats and currency. The primary lure appears to be 'free Robux' or 'free spins' for games like Roblox and Coin Master. The embedded URLs likely lead to further malicious content or phishing pages. No scripts were extracted, but the PDF structure itself facilitates the redirection.

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/431946152/how-do-i-get-robux-game-hack In PDF document text
    • http://www.backlineservice.nl/images/roblox-robux-generator-tool_GM431946152.pdfIn PDF document text
    • http://www.backlineservice.nl/images/coin-master-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://www.backlineservice.nl/images/coin-master-100-spin-hack_GM406889139.pdfIn PDF document text
    • http://www.backlineservice.nl/images/coin-master-daily-free-spins-link-today-2021_GM406889139.pdfIn PDF document text
    • http://www.backlineservice.nl/images/minecraft-pe-apk-download-free-015-0_GM479516143.pdfIn PDF document text
    • http://www.backlineservice.nl/images/hack-robux_GM431946152.pdfIn PDF document text
    • http://www.backlineservice.nl/images/how-to-change-your-username-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://www.backlineservice.nl/images/free-roblox-clothes-girl_GM431946152.pdfIn PDF document text
    • http://www.backlineservice.nl/images/free-robux-real-2021_GM431946152.pdfIn PDF document text
    • http://www.backlineservice.nl/images/free-robux-link_GM431946152.pdfIn PDF document text
    • http://www.backlineservice.nl/images/free-robux-no-anti-bot-verification_GM431946152.pdfIn PDF document text
    • http://www.backlineservice.nl/images/hack-coin-master-8-ball-pool_GM406889139.pdfIn PDF document text
    • http://www.backlineservice.nl/images/free-robux-games_GM431946152.pdfIn PDF document text
    • http://www.backlineservice.nl/images/how-to-get-free-robux-website_GM431946152.pdfIn PDF document text
    • http://www.backlineservice.nl/images/roblox-phantom-forces-hack_GM431946152.pdfIn PDF document text
    • http://www.backlineservice.nl/images/robux-hacks-2021_GM431946152.pdfIn PDF document text
    • http://www.backlineservice.nl/images/coin-master-hack-tool_GM406889139.pdfIn PDF document text
    • http://www.backlineservice.nl/images/free-spins-and-coins-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • http://www.backlineservice.nl/images/free-free-robux_GM431946152.pdfIn PDF document text
    • http://www.backlineservice.nl/images/free-robux-easy_GM431946152.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_off00004bc1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BC1 24600 bytes
SHA-256: da4388634f3133d2b98425e9eb2f9f72e87a6ba01e36837f3e797a298e193768
font_01_sfnt_off000083a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83A6 18284 bytes
SHA-256: 76696481b4f85a4b134e50273d4f72d60bf885136cdb061a204ba21e520483fb

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