Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c3b4ab3ff15e908…

MALICIOUS

PDF

41.8 KB Created: 2021-05-17 14:52:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: f8cf2e53634ae1d3695f7149599018ca SHA-1: 5402174b77273fea292ac232cbf2103ddc8e353e SHA-256: 0c3b4ab3ff15e908b9e4572488cc2b77d947be22c656897a252798e05b34664b
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains multiple links, including one identified as a 'game hack' lure. The primary malicious URL is https://netcdn.xyz/app/406889139/coin-master-free-spins-link-today-2021-game-hack, which likely redirects to a scam or malicious content. The document's content and heuristics strongly suggest a social engineering tactic to trick users into clicking these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/coin-master-free-spins-link-today-2021-game-hack PDF link annotation
    • https://elearningmtsn9jkt.net/__statics/gudangsoal/files/coin-master-free-spins-1701-20_GM406889139.pdfIn PDF document text
    • https://elearningmtsn9jkt.net/__statics/gudangsoal/files/is-minecraft-free-on-pc_GM479516143.pdfIn PDF document text
    • https://elearningmtsn9jkt.net/__statics/gudangsoal/files/free-robux-apk_GM431946152.pdfIn PDF document text
    • http://www.elearningmtsn9jkt.net/__statics/gudangsoal/files/how-to-get-free-robux-without-downloading-apps-2021_GM431946152.pdfIn PDF document text
    • http://www.elearningmtsn9jkt.net/__statics/gudangsoal/files/coin-master-hack-https-coinms-net_GM406889139.pdfIn PDF document text
    • http://www.elearningmtsn9jkt.net/__statics/gudangsoal/files/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://elearningmtsn9jkt.net/__statics/gudangsoal/files/coin-master-spin-free_GM406889139.pdfIn PDF document text
    • https://elearningmtsn9jkt.net/__statics/gudangsoal/files/robux-com-free_GM431946152.pdfIn PDF document text
    • https://elearningmtsn9jkt.net/__statics/gudangsoal/files/coin-hackhub-coin-master_GM406889139.pdfIn PDF document text
    • http://www.elearningmtsn9jkt.net/__statics/gudangsoal/files/roblox-g_GM431946152.pdfIn PDF document text
    • http://www.elearningmtsn9jkt.net/__statics/gudangsoal/files/minecraft-tower-defense-hacked_GM479516143.pdfIn PDF document text
    • https://elearningmtsn9jkt.net/__statics/gudangsoal/files/can-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.elearningmtsn9jkt.net/__statics/gudangsoal/files/i-need-robux_GM431946152.pdfIn PDF document text
    • http://www.elearningmtsn9jkt.net/__statics/gudangsoal/files/free-robux-gift-card-codes-2021_GM431946152.pdfIn PDF document text
    • https://elearningmtsn9jkt.net/__statics/gudangsoal/files/free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://elearningmtsn9jkt.net/__statics/gudangsoal/files/rbx-free_GM431946152.pdfIn PDF document text
    • https://elearningmtsn9jkt.net/__statics/gudangsoal/files/aimbot-download-roblox_GM431946152.pdfIn PDF document text
    • http://www.elearningmtsn9jkt.net/__statics/gudangsoal/files/free-minecraft-servers-to-join_GM479516143.pdfIn PDF document text
    • http://www.elearningmtsn9jkt.net/__statics/gudangsoal/files/link-for-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.elearningmtsn9jkt.net/__statics/gudangsoal/files/free-robux-real_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_off00004915.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4915 23720 bytes
SHA-256: 52bcbeba59ad557f31a478ec1089c178c72f4f19c8aa6af82445ec387de7a1a2
font_01_sfnt_off00007f0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F0B 18812 bytes
SHA-256: 209d45ed87732d827821998a5283e56b95c39a3af4032faff2e6da7d3e76f78f

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