Malicious PDF — malware analysis report

Static analysis result for SHA-256 e017ad46fe112fb4…

MALICIOUS

PDF

35.8 KB Created: 2021-07-01 12:05:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: a611bfbf84274223abc9d4ec6885e22a SHA-1: 361c47a64fcc889ca4a7158dbdef0683fc3aa1a1 SHA-256: e017ad46fe112fb45cdd883a933ec89f3f1cd3a5edb004a3e86f5a6c42ceec49
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that are identified as malicious redirectors, specifically targeting users with lures for free game currency and hacks. The primary malicious URL identified is http://netcdn.co/app/431946152/free-robux-no-survey-or-human-verification-2021-game-hack. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the lures suggest a phishing or social engineering attack designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/free-robux-no-survey-or-human-verification-2021-game-hack In PDF document text
    • http://digilib-pps.unja.ac.id/repository/tiktok-free-search_GM835599320.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/casper-hack-for-roblox-download_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/free-roblox-characters_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/how-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/how-do-you-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/roblox-boxing-simulator-cheats-xbox-one_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/how-do-you-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/minecraft-server-hacks_GM479516143.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/free-robux-easy_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/free-robux-accounts_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/como-hackear-roblox-en-pc-para-tener-ventajas_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/roblox-games-that-i-can-play-for-free_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/roblox-lua-script-snow-board-resort-hack_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/coin-master-daily-free-spins_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/promo-codes-for-free-stuff-2021-roblox_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/free-minecraft-mods_GM479516143.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/free-coin-master-gift-link_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/cheats-for-robux-2021_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/roblox-groups-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/www-roblox-hack-top_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
font_00_sfnt_off000030ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30AD 22772 bytes
SHA-256: 69411688659a98edbbe1be15e79e05d50ad172c53b5de390528d1f06562141e8
font_01_sfnt_off000063ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63CA 20028 bytes
SHA-256: 97a0bd82024d13f08d3acd3f0dc4350cc688bb1cef814ae2065fe10a8dba7645

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