Malicious PDF — malware analysis report

Static analysis result for SHA-256 93e85fc3d55b2848…

MALICIOUS

PDF

43.9 KB Created: 2021-05-15 05:02:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 4c8ab26dd5ab995bff046369c20d06fc SHA-1: 03689d8b5d5782371c3c73f2d0f982b570186dc1 SHA-256: 93e85fc3d55b2848504add6422cd94ae9273463471db690917d0c823774b3f12
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirector infrastructure, disguised as 'free generators' or 'game hacks' for popular games. The document body and embedded URLs strongly suggest a phishing or scam attempt to lure users to malicious sites. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate malicious intent, likely involving redirection to a malicious payload or phishing page.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

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/coin-master-cards-for-free-game-hack In PDF document text
    • http://cmfd.nl/images/get-more-robux_GM431946152.pdfIn PDF document text
    • http://cmfd.nl/images/robux-free-co_GM431946152.pdfIn PDF document text
    • http://cmfd.nl/images/google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://cmfd.nl/images/202100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://cmfd.nl/images/free-robux-just-enter-username-and-password_GM431946152.pdfIn PDF document text
    • http://cmfd.nl/images/coin-master-blogspot_GM406889139.pdfIn PDF document text
    • http://cmfd.nl/images/is-minecraft-education-edition-free_GM479516143.pdfIn PDF document text
    • http://cmfd.nl/images/how-to-get-free-robux-without-verifying-2021_GM431946152.pdfIn PDF document text
    • http://cmfd.nl/images/how-to-get-free-robux-on-phone-2021_GM431946152.pdfIn PDF document text
    • http://cmfd.nl/images/how-to-get-minecraft-for-free-on-android-device_GM479516143.pdfIn PDF document text
    • http://cmfd.nl/images/roblox-hack-com_GM431946152.pdfIn PDF document text
    • http://cmfd.nl/images/coin-master-hack-online-no-human-verification_GM406889139.pdfIn PDF document text
    • http://cmfd.nl/images/more-robux_GM431946152.pdfIn PDF document text
    • http://cmfd.nl/images/coin-master-tiradas-gratis-link_GM406889139.pdfIn PDF document text
    • http://cmfd.nl/images/coin-master-free-spins-whatsapp-link_GM406889139.pdfIn PDF document text
    • http://cmfd.nl/images/how-do-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://cmfd.nl/images/coin-master-free-spins-hacktman_GM406889139.pdfIn PDF document text
    • http://cmfd.nl/images/free-robux-site_GM431946152.pdfIn PDF document text
    • http://cmfd.nl/images/jailbreak-script_GM431946152.pdfIn PDF document text
    • http://cmfd.nl/images/minecraft-hacked-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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000045b7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x45B7 25640 bytes
SHA-256: 48be976d219f3615f9c349b40792f392c8f58330cf4851878f48d6fdb6c75eed
font_01_sfnt_off00007f9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F9A 3040 bytes
SHA-256: 7252403973c7e026b171f890d84139fa014ef2f349dc55efaf22aff16b5003f5
font_02_sfnt_off00008a21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A21 17884 bytes
SHA-256: d54aa51eaaaa3e2864f0114713409e316145a0183ee6aba9be1e443db1dceb19

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