Malicious PDF — malware analysis report

Static analysis result for SHA-256 becac8e0152a519f…

MALICIOUS

PDF

35.9 KB Created: 2021-05-21 16:31:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 66bcbcf1818810962c322032ccd6c405 SHA-1: 77b6902a5e3831d75748bbc7b42bfa47dbd8d316 SHA-256: becac8e0152a519f0e310f3598256b11abe616a658a347fac5afd46f71ab64b6
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically promoting "free spins" and "game hacks" to entice users. The primary malicious URL identified is https://netcdn.xyz/app/406889139/free-spins-coin-master-app-game-hack. The document body also contains references to these lures and additional URLs hosted on medinup.pt, suggesting a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9492

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/406889139/free-spins-coin-master-app-game-hack In PDF document text
    • http://medinup.pt/images/master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://medinup.pt/images/free-minecraft-alt-accounts_GM479516143.pdfIn PDF document text
    • http://medinup.pt/images/earn-free-robux_GM431946152.pdfIn PDF document text
    • http://medinup.pt/images/coin-master-apk-hack-32_GM406889139.pdfIn PDF document text
    • http://medinup.pt/images/mcpe-client_GM479516143.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_002_off00003309.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3309 24784 bytes
SHA-256: 0f2cd6e5a16ee44c7f21d14db415f6413a008712616e59252860b3aeb0c9361f
font_01_sfnt_off00006c3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C3A 17884 bytes
SHA-256: ed1ea3c4e7635b9f65a5e0b6798c92341d7c1feababf17669f4466b6be8364ea

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