Malicious PDF — malware analysis report

Static analysis result for SHA-256 21d9daba153af56d…

MALICIOUS

PDF

36.5 KB Created: 2021-05-20 23:05:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: a05040469f2aa5b028fe7fd8f884e0fd SHA-1: 4fc3db1ebbcf181f1292a7e12a6a8a2e3f2a0643 SHA-256: 21d9daba153af56d5177659a654f18495d98feb44948e8ab56506d0cb1569262
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links and a document body that explicitly lures the user with promises of game hacks and free spins for popular games like Coin Master and Roblox. The primary malicious URL identified is https://netcdn.xyz/app/406889139/coin-master-daily-free-spins-2021-game-hack, which is likely a redirector to a malicious payload or phishing page. The presence of multiple game-related lures suggests a broad targeting approach.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9492

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-daily-free-spins-2021-game-hack PDF link annotation
    • http://simon-skov-fougt.dk/billeder/roblox-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/free-minecraft-addons_GM479516143.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/free-roblox-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/how-to-download-wurst_GM479516143.pdfIn PDF document text
    • https://coinmasterspinandcoin.comIn 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_002_off000032eb.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x32EB 24972 bytes
SHA-256: afcf164599c3d90863baecf0e06114e45df02c4c724ba737702bc730e06d3207
font_01_sfnt_off00006c06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C06 18708 bytes
SHA-256: 0e09573a858265cfc65c534eb28458a66078312e2bd7bae94317e03ea41fcd19

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