Malicious PDF — malware analysis report

Static analysis result for SHA-256 43d7162032461776…

MALICIOUS

PDF

44.3 KB Created: 2021-05-14 23:32:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 32c0a7739c9ca843ea7f914ccfc99b57 SHA-1: 926ec26279c33d3374909c2ef35e4f732052a96a SHA-256: 43d7162032461776811a090ceb21758334ea1786d27a175d81ee4245202f23c1
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-confidence heuristic indicating it links to a 'free generator / game hack' redirector, specifically pointing to the URL https://netcdn.xyz/app/406889139/free-coin-and-spin-for-coin-master-game-hack. This lure is designed to trick users into clicking the link, likely leading to a malicious download or further phishing attempts. No scripts were extracted, but the document's structure and embedded URLs strongly suggest a social engineering tactic for initial access.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/406889139/free-coin-and-spin-for-coin-master-game-hack PDF link annotation
    • http://e-mailservis.cz/images/synapse-roblox-free-download_GM431946152.pdfIn PDF document text
    • http://e-mailservis.cz/images/coin-master-pet-food-hack_GM406889139.pdfIn PDF document text
    • http://e-mailservis.cz/images/free-robux-hack-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://e-mailservis.cz/images/coin-master-links-free-spins_GM406889139.pdfIn PDF document text
    • http://e-mailservis.cz/images/how-to-hack-coin-master-facebook_GM406889139.pdfIn PDF document text
    • http://e-mailservis.cz/images/roblox-character-free_GM431946152.pdfIn PDF document text
    • http://e-mailservis.cz/images/how-to-get-minecraft-bedrock-for-free_GM479516143.pdfIn PDF document text
    • http://e-mailservis.cz/images/free-robux-without-survey_GM431946152.pdfIn PDF document text
    • http://e-mailservis.cz/images/minecraft-games-free-download_GM479516143.pdfIn PDF document text
    • http://e-mailservis.cz/images/hacking-apps-for-roblox_GM431946152.pdfIn PDF document text
    • http://e-mailservis.cz/images/claim-free-robux-button_GM431946152.pdfIn PDF document text
    • http://e-mailservis.cz/images/coin-master-hack-tool-download_GM406889139.pdfIn PDF document text
    • http://e-mailservis.cz/images/free-roblox-website_GM431946152.pdfIn PDF document text
    • http://e-mailservis.cz/images/coin-master-free-pet-food_GM406889139.pdfIn PDF document text
    • http://e-mailservis.cz/images/coin-master-guide-to-free-spins-and-rewards_GM406889139.pdfIn PDF document text
    • http://e-mailservis.cz/images/blogspot-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://e-mailservis.cz/images/free-ways-to-get-robux_GM431946152.pdfIn PDF document text
    • http://e-mailservis.cz/images/free-promo-codes-for-roblox-2021_GM431946152.pdfIn PDF document text
    • http://e-mailservis.cz/images/coin-master-free-stuff_GM406889139.pdfIn PDF document text
    • http://e-mailservis.cz/images/coin-master-get-free-cards_GM406889139.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_off00004aa2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AA2 23972 bytes
SHA-256: b3562d3b6c1c356ba1121f11a8ca669fad565714ed5f4a6e83d1f8c7322f2af1
font_01_sfnt_off00008080.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8080 3124 bytes
SHA-256: 9967c6221325a4ff3f7c4336922605f990450164c2eee2df708cc81823c6ec98
font_02_sfnt_off00008b5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B5F 18060 bytes
SHA-256: 42d2e7759bfcfecd447a46542d8809f4e944f7c9df23d0847fbb4c7837fae2b0

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