Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b6fbe3b0da28161…

MALICIOUS

PDF

42.1 KB Created: 2021-05-15 05:54:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 71d26c1b283fde47767e4c4a7aadbe7f SHA-1: 3c29231c7500f68601e44ff0831b4ac2c96cddc4 SHA-256: 2b6fbe3b0da28161905d741923ab626f9ad322faa99ba59a4977460cc168f6ed
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/coin-master-card-collection-hack-apk-game-hack PDF link annotation
    • http://www.myresidence.lu/userfiles/files/free-400-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/free-coin-link-coin-master_GM406889139.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/daily-coin-master_GM406889139.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/coin-master-gifts_GM406889139.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/coin-master-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/how-to-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/www-free-robux_GM431946152.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/minecraft-esp_GM479516143.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/how-to-get-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/gain-robux_GM431946152.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/coin-master-daily-free-rewards_GM406889139.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/blox-world-free-robux_GM431946152.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/how-to-get-free-spins-and-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/free-robux-no-human-verification-generator_GM431946152.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/minecraft-diamond-finder-hack_GM479516143.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/master-coin-free-spin_GM406889139.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_off0000499f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x499F 24988 bytes
SHA-256: 80638de351c524c8b1c2413af0a55a5c0c7d78b6e1e62b0cbddd81556a285612
font_01_sfnt_off00008270.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8270 18140 bytes
SHA-256: 68c29d815848bb603bcc9c69777aac60e323e9398a8fda93459a550b8c2ca937

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