Malicious PDF — malware analysis report

Static analysis result for SHA-256 35cc92da64c57ce4…

MALICIOUS

PDF

45.8 KB Created: 2021-05-14 12:32:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 1a5099e4867f62210d383080301b8101 SHA-1: 5cde8c05b203aa3db90e02778f9ec0a435829652 SHA-256: 35cc92da64c57ce4dfb7e9f57557285d16a5bd27c3be3f79f60353ef3177da49
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for a 'free generator' or 'game hack' which redirects to malicious infrastructure. The embedded URL 'https://netcdn.xyz/app/431946152/how-to-get-free-robux-2021-no-human-verification-game-hack' is flagged as malicious. The document body and heuristics indicate a social engineering tactic to trick users into visiting potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9432

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-to-get-free-robux-2021-no-human-verification-game-hack In PDF document text
    • http://eltisstudio.sk/images/free-spins-coin-master-apple_GM406889139.pdfIn PDF document text
    • http://eltisstudio.sk/images/free-roblox-exploits_GM431946152.pdfIn PDF document text
    • http://eltisstudio.sk/images/roblox-free-robux-website_GM431946152.pdfIn PDF document text
    • http://eltisstudio.sk/images/oprewards-login_GM431946152.pdfIn PDF document text
    • http://eltisstudio.sk/images/roblox-promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
    • http://eltisstudio.sk/images/link-for-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://eltisstudio.sk/images/how-to-hack-golden-card-in-coin-master_GM406889139.pdfIn PDF document text
    • http://eltisstudio.sk/images/free-spin-app-for-coin-master_GM406889139.pdfIn PDF document text
    • http://eltisstudio.sk/images/coin-master-free-spins-and-free-coins_GM406889139.pdfIn PDF document text
    • http://eltisstudio.sk/images/smart-lodhi-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://eltisstudio.sk/images/rbl-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://eltisstudio.sk/images/do-you-get-windows-10-minecraft-for-free-with-java_GM479516143.pdfIn PDF document text
    • http://eltisstudio.sk/images/how-to-get-hacks-on-roblox_GM431946152.pdfIn PDF document text
    • http://eltisstudio.sk/images/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
    • http://eltisstudio.sk/images/coin-master-game-hack-online_GM406889139.pdfIn PDF document text
    • http://eltisstudio.sk/images/minecraft-bedrock-free-download-pc_GM479516143.pdfIn PDF document text
    • http://eltisstudio.sk/images/where-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://eltisstudio.sk/images/google-play-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://eltisstudio.sk/images/free-roblox-accounts-with-robux-that-work-not-banned_GM431946152.pdfIn PDF document text
    • http://eltisstudio.sk/images/free-robux-survey_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004858.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4858 25952 bytes
SHA-256: 810133beb7dbe75d86118d0a43a8fdcfe22540c293fa9763c245f4da5c60d95a
font_01_sfnt_off00008372.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8372 2820 bytes
SHA-256: d88f25cfe237a714f996150a11dd8a058f0f7c3e9d1ae91c17b46c10409b6c0b
font_02_sfnt_off00008d0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D0D 19428 bytes
SHA-256: dfc7ca414cfca4f80301273998e01ceb4bfd22e3de883fcbe9d6a0102e8d41a4

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