Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c5e3b8c897fc393…

MALICIOUS

PDF

33.5 KB Created: 2021-06-20 09:08:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: d31d208fe6f8f928ae9ada1a9fc21a5e SHA-1: 22bad092c47eeb70f797ffa612008a863b6f8273 SHA-256: 9c5e3b8c897fc393667f59107c7c6d5d37d7a1634d629c07176998de37f3fa0a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and lures users with promises of game hacks and generators. The primary lure is 'Dungeon Master Roblox Hack' pointing to http://netcdn.co/app/431946152/dungeon-master-roblox-hack-game-hack, which is flagged as a malicious redirector. The document body also contains numerous other links to similar game-related hack sites, suggesting a phishing or scam campaign.

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/dungeon-master-roblox-hack-game-hack In PDF document text
    • http://zercalo.org/images/minecraft-java-code-free_GM479516143.pdfIn PDF document text
    • http://zercalo.org/images/coin-master-400-spin-link-hack_GM406889139.pdfIn PDF document text
    • http://zercalo.org/images/roblox-robux-hack-android-apk_GM431946152.pdfIn PDF document text
    • http://zercalo.org/images/coin-master-free_GM406889139.pdfIn PDF document text
    • http://zercalo.org/images/free-bedrock-minecraft_GM479516143.pdfIn PDF document text
    • http://zercalo.org/images/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://zercalo.org/images/roblox-prison-life-v20-infite-ammo-hack-2021_GM431946152.pdfIn PDF document text
    • http://zercalo.org/images/roblox-svg-free_GM431946152.pdfIn PDF document text
    • http://zercalo.org/images/coin-master-free-coins_GM406889139.pdfIn PDF document text
    • http://zercalo.org/images/quel-touche-faire-pour-avoir-le-free-code-dans-roblox_GM431946152.pdfIn PDF document text
    • http://zercalo.org/images/free-robux-with-no-verification_GM431946152.pdfIn PDF document text
    • http://zercalo.org/images/how-to-download-minecraft-for-free-on-android_GM479516143.pdfIn PDF document text
    • http://zercalo.org/images/insane-jailbreak-roblox-admin-panel-hack-working_GM431946152.pdfIn PDF document text
    • http://zercalo.org/images/roblox-free-vip-server_GM431946152.pdfIn PDF document text
    • http://zercalo.org/images/hacking-someones-account-roblox_GM431946152.pdfIn PDF document text
    • http://zercalo.org/images/minecraft-free-online-games_GM479516143.pdfIn PDF document text
    • http://zercalo.org/images/roblox-free-download_GM431946152.pdfIn PDF document text
    • http://zercalo.org/images/best-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://zercalo.org/images/hightlighter-player-roblox-cheat_GM431946152.pdfIn PDF document text
    • http://zercalo.org/images/roblox-cheats-for-hacks_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_off00002ccf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2CCF 21952 bytes
SHA-256: 08ba87d97269a1a09477170a04b708cc4d369dbdeb05ec065bb8d615a0f13b80
font_01_sfnt_off00005cde.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CDE 19264 bytes
SHA-256: 60a65ae2357f7ddc694748313497c0bbfee1b72d3eb7ab43a9a5f5952210ab67

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