Malicious PDF — malware analysis report

Static analysis result for SHA-256 e19ed72bb3224927…

MALICIOUS

PDF

44.3 KB Created: 2021-06-03 13:06:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 54ec29f97611f05d693ff60162d0b69c SHA-1: 7035e1b3cb05e74bfe18f0cef5fd0bb679915ff7 SHA-256: e19ed72bb3224927551a46761a66067b5096e5370161730ba89347ad23720fc3
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains a lure for a 'game hack' and presents a fake CAPTCHA to trick the user into clicking a malicious link. The embedded URL, https://netcdn.online/app/406889139/coin-master-free-gold-cards-link-2021-game-hack, is likely intended to lead to a further stage of infection or phishing. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

Heuristics 5

  • 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.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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.online/app/406889139/coin-master-free-gold-cards-link-2021-game-hack PDF link annotation
    • http://slim.sisminkada.net/repository/minecraft-account-hacked_GM479516143.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/free-texture-packs-for-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/minecraft-pc-free_GM479516143.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/free-robux-master_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/coin-master-pc-game-free-download_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/coin-master-hack-software_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/minecraft-pc-download-free-full-version_GM479516143.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/how-to-get-a-free-minecraft-account_GM479516143.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/greenlegocats-free-robux_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/games-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/moonactive-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/hack-coin-master-using-cheat-engine_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/how-to-get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/coin-master-free-link-today_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/latest-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/coin-master-free-spins-facebook_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/how-to-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/worst-roblox-avatars_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_004_off000051fd.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x51FD 24368 bytes
SHA-256: 3793d7b8883937c65ca5365572c31cecb67773b57e40f24aad0ca50218351116
font_01_sfnt_off000089b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89B6 18532 bytes
SHA-256: a79e7cb72d84571651012e39c641e7e9f676cc5eff01d5029647c2118b2a51b7

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