Malicious PDF — malware analysis report

Static analysis result for SHA-256 3df5f2f978584c59…

MALICIOUS

PDF

44.8 KB Created: 2021-05-19 00:30:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 609844ddb630098db08e3e1624574497 SHA-1: c05a91eb16e803a0bb41e00cf74bee07c1b2cd77 SHA-256: 3df5f2f978584c59143cabfbaa990b1a352e645d3b6689298d581eafce6e5009
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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-spins-and-coins-for-coin-master-game-hack PDF link annotation
    • http://olimpik.mk/imagescke/upload/files/mistplay-robux_GM431946152.pdfIn PDF document text
    • http://olimpik.mk/imagescke/upload/files/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://olimpik.mk/imagescke/upload/files/coin-master-free-spin-today-2021_GM406889139.pdfIn PDF document text
    • http://olimpik.mk/imagescke/upload/files/coin-master-villages_GM406889139.pdfIn PDF document text
    • http://olimpik.mk/imagescke/upload/files/free-100-robux_GM431946152.pdfIn PDF document text
    • http://olimpik.mk/imagescke/upload/files/minecraft-free-minecoins_GM479516143.pdfIn PDF document text
    • http://olimpik.mk/imagescke/upload/files/get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://olimpik.mk/imagescke/upload/files/free-roblox-generator_GM431946152.pdfIn PDF document text
    • http://olimpik.mk/imagescke/upload/files/free-robux-apps-that-work_GM431946152.pdfIn PDF document text
    • http://olimpik.mk/imagescke/upload/files/how-to-get-free-robux-without-offers_GM431946152.pdfIn PDF document text
    • http://olimpik.mk/imagescke/upload/files/can-you-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • http://olimpik.mk/imagescke/upload/files/how-to-change-your-username-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://olimpik.mk/imagescke/upload/files/coin-master-free-spins-link-today-ios_GM406889139.pdfIn PDF document text
    • http://olimpik.mk/imagescke/upload/files/coin-master-hack-without-verification-code_GM406889139.pdfIn PDF document text
    • http://olimpik.mk/imagescke/upload/files/coin-master-hack-injection_GM406889139.pdfIn PDF document text
    • http://olimpik.mk/imagescke/upload/files/dailyrobux_GM431946152.pdfIn PDF document text
    • http://olimpik.mk/imagescke/upload/files/how-to-change-your-roblox-username-for-free-2021_GM431946152.pdfIn PDF document text
    • http://olimpik.mk/imagescke/upload/files/roblox-avatar-editor-free_GM431946152.pdfIn PDF document text
    • http://olimpik.mk/imagescke/upload/files/gain-robux_GM431946152.pdfIn PDF document text
    • http://olimpik.mk/imagescke/upload/files/roblox-free-robux-no-verification_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_off00004ff5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4FF5 29484 bytes
SHA-256: 4ea76ca74f5e2b66d8f5fadbaaae6b71cb6699d0fc297d52f2f85c3c596325e6
font_01_sfnt_off00008ddc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DDC 18060 bytes
SHA-256: d4954d2d00bde9f6a1061857a61d2c62c1ae360f44744af150ee923481526d51

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