Malicious PDF — malware analysis report

Static analysis result for SHA-256 be39b0c96b842826…

MALICIOUS

PDF

42.6 KB Created: 2021-05-14 16:35:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 9dc4289d951821d3c2be37d385e71348 SHA-1: 566ee1feb4a4c78c4c81d456ffdb543531f583cc SHA-256: be39b0c96b842826de77449ad2ef33db89cf83bee7e69186569ac6b3b7fd07b8
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 0.9971

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/free-spins-coin-master-daily-game-hack PDF link annotation
    • http://santeh-40.ru/images/free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://santeh-40.ru/images/500-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://santeh-40.ru/images/coin-master-hack-without-human-verification_GM406889139.pdfIn PDF document text
    • http://santeh-40.ru/images/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://santeh-40.ru/images/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://santeh-40.ru/images/robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://santeh-40.ru/images/spin-coin-master-free_GM406889139.pdfIn PDF document text
    • http://santeh-40.ru/images/static-moonactive-net-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://santeh-40.ru/images/free-minecraft-hosting-24-7_GM479516143.pdfIn PDF document text
    • http://santeh-40.ru/images/free-arsenal-hacks_GM431946152.pdfIn PDF document text
    • http://santeh-40.ru/images/links-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://santeh-40.ru/images/free-robux-pin-codes_GM431946152.pdfIn PDF document text
    • http://santeh-40.ru/images/play-minecraft-free-online-no-download_GM479516143.pdfIn PDF document text
    • http://santeh-40.ru/images/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://santeh-40.ru/images/minecraft-hack-client-download_GM479516143.pdfIn PDF document text
    • http://santeh-40.ru/images/minecraft-windows-10-free-trial_GM479516143.pdfIn PDF document text
    • http://santeh-40.ru/images/free-robux-no-verification-required_GM431946152.pdfIn PDF document text
    • http://santeh-40.ru/images/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • http://santeh-40.ru/images/free-robux-hack_GM431946152.pdfIn PDF document text
    • http://santeh-40.ru/images/free-minecraft-codes_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004a7d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A7D 24944 bytes
SHA-256: 3a1299b9edccac3b506486202db2b414ded515c93fa026bacc1e4a772ea1294b
font_01_sfnt_off00008423.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8423 18308 bytes
SHA-256: 148513adc370bd80d4aa437ff839b9fedc0d32c70a1f1942828a2071191e315e