Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd4df01b60344999…

MALICIOUS

PDF

40.2 KB Created: 2021-05-23 06:09:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 75b46556ba03eb1508fec795cfc654a4 SHA-1: 9da69bd5d16c25e121319216955ce333c86dd2de SHA-256: bd4df01b60344999cac1e066556f1ad506bf5491f2c65cb0c3f486a4505a1542
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links designed to lure users into clicking on what appears to be a 'Roblox Hack 2021' generator. These links redirect to malicious infrastructure, specifically a URL that hosts further malicious PDFs. The ML classifier and heuristic firings strongly indicate malicious intent, likely to distribute malware or engage in phishing through these redirects.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7885

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/431946152/roblox-hack-2021-game-hack In PDF document text
    • http://www.centralbarbershop.ru/images/robux-for-kids_GM431946152.pdfIn PDF document text
    • http://www.centralbarbershop.ru/images/coin-master-free-spin-today_GM406889139.pdfIn PDF document text
    • http://www.centralbarbershop.ru/images/mobihack-net-roblox-hack_GM431946152.pdfIn PDF document text
    • http://www.centralbarbershop.ru/images/coin-master-mod-apk-latest-hack-with-unlimited-free-spins_GM406889139.pdfIn PDF document text
    • http://www.centralbarbershop.ru/images/roblox-shirt-template-free_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003473.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3473 26732 bytes
SHA-256: 21baab8c5d755ce5ec71cff6557d67e53819369da27a7680e3804d1c87b82709
font_01_sfnt_off000070a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70A5 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off00007a90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A90 18584 bytes
SHA-256: 2941163c9806e22b58ea5552aa71059231a9f2c3bbffbca0ecd460ca17501cff

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