Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1881f6899eaa9e7…

MALICIOUS

PDF

35.2 KB Created: 2021-07-05 19:02:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: e51eb47ecdd624447999cfa3dcc3db1a SHA-1: 3c16c4cb7ac56bca930b47a62b3610e4a21a9cb2 SHA-256: d1881f6899eaa9e7838dca085bca1bff127aa70a01106e3fb8143623e80d9c46
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to external websites, with a primary URL pointing to a 'how-to-get-free-robux' generator. The document body and heuristics indicate a lure for game-related cheats or currency, which is a common social engineering tactic. The presence of embedded URLs suggests an attempt to redirect the user to a malicious site, likely for phishing or to download a secondary payload.

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 http://netcdn.tw/app/431946152/how-to-get-free-robux-2021-easy-game-hack PDF link annotation
    • http://sdn4-wates.sch.id/akasia/repository/free-minecraft-skin-packs_GM479516143.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/free-rebirths-roblox_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/free-coin-coin-master_GM406889139.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/free-robux-gift-card-codes-2021-feb_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/free-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/wurst-18-9_GM479516143.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/robux-cheat-2021_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/free-robux-windows_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/coin-master-time-hack-2021_GM406889139.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/free-robux-generator-straight-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/earn-robux-online_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/coin-master-fan-page-facebook_GM406889139.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/roblox-craftwars-hack_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/how-to-hack-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/free-robux-script-pastebin-instent-in-promo-code-2021_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/pokemon-go-free-roam_GM1094591345.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/robux-hack-page_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/coin-master-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/download-apps-for-robux_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
font_00_sfnt_off0000307d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x307D 22492 bytes
SHA-256: 92c84e193f59545460a375fe91409a9b4035290774a61a6db1303d531e94d389
font_01_sfnt_off0000629c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x629C 19568 bytes
SHA-256: 54573245d87bf425d09f38ae69d600f60ea89f6a8aa7cff0a6b46d42a5179ab9

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