Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ead523b5ef65ec2…

MALICIOUS

PDF

34.2 KB Created: 2021-07-05 17:04:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 2afd09c1c227d1eb65f0ef3e890dac2c SHA-1: d2f6c2f6a8118986bc1f6d5c7aaaed600f82191a SHA-256: 8ead523b5ef65ec25ea7eeecf532363526c9a04bbe13e6f8e860522a537da2ca
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by an ML classifier. It uses a password-protected-archive lure. 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 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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 http://netcdn.tw/app/406889139/hack-my-spins-coin-master-game-hack PDF link annotation
    • http://library.apsidoarjo.ac.id//repository/coin-master-download-hack_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/how-to-get-free-robux-without-verifying_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/dress-up-on-roblox-that-are-no-roblox-just-free_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/how-to-crack-free-robux-robuxmaniac_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/como-hackear-para-tener-robux-roblox_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-robux-need-password_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/freespinandcoinblogspot-com-2021-11-coinmasterfreespins_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/free-online-minecraft-server_GM479516143.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/hack-the-coin-master-game_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-robux-inago-goay_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/roblox-work-at-a-pizza-place-cheats_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/download-hack-roblox-lumber-tycoon-2_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-coin-master-spins-daily_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/roblox-free-printables_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/how-to-get-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/focus-points-hack-roblox-dybo_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/are-there-any-free-sword-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/does-roblox-ever-give-free-robux_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-coin-master-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/coin-master-card-hack_GM406889139.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
font_00_sfnt_off00002f8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F8E 22924 bytes
SHA-256: 5b7f2741eb69633769b265eeef4fe85b29ced8bf4eec744a868a2834aa3f6a07
font_01_sfnt_off000062c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62C9 18360 bytes
SHA-256: d3f4073d27df4065fdae41c61e3722dfa23d28428d4dd91a08b4daaa7000713b

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