Malicious PDF — malware analysis report

Static analysis result for SHA-256 72d4be1c6875c499…

MALICIOUS

PDF

44.3 KB Created: 2021-06-11 07:00:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a8546285574cb04dfd9ca003d390d3d7 SHA-1: 4588085bafaf6d335bba242bede5b76610eb25ac SHA-256: 72d4be1c6875c4995f1f1db825e34d93e1b48fa3b4af94888a244a866b06b5cf
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links designed to lure users into clicking on them by promising free game currency or hacks. The primary link redirects to known malicious infrastructure, indicating a phishing or scam attempt. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a malicious workflow aimed at redirecting users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.tw/app/431946152/app-free-robux-game-hack In PDF document text
    • http://manfeld.dk/images/coin-master-free-spins-link-blogspot-2021_GM406889139.pdfIn PDF document text
    • http://manfeld.dk/images/master-coin-free-link_GM406889139.pdfIn PDF document text
    • http://manfeld.dk/images/free-robux-cheat-2021_GM431946152.pdfIn PDF document text
    • http://manfeld.dk/images/coin-master-link-daily-get-free-spins-amp_GM406889139.pdfIn PDF document text
    • http://manfeld.dk/images/how-to-make-a-private-server-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://manfeld.dk/images/coin-master-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://manfeld.dk/images/robuxy-com-free-robux_GM431946152.pdfIn PDF document text
    • http://manfeld.dk/images/how-to-get-minecraft-pocket-edition-for-free_GM479516143.pdfIn PDF document text
    • http://manfeld.dk/images/free-roblox-card_GM431946152.pdfIn PDF document text
    • http://manfeld.dk/images/roblox-login-make-a-free-account_GM431946152.pdfIn PDF document text
    • http://manfeld.dk/images/how-to-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://manfeld.dk/images/free-online-minecraft-server_GM479516143.pdfIn PDF document text
    • http://manfeld.dk/images/free-minecraft-accounts-2021_GM479516143.pdfIn PDF document text
    • http://manfeld.dk/images/coin-master-hack-injection_GM406889139.pdfIn PDF document text
    • http://manfeld.dk/images/minecraft-linux-free_GM479516143.pdfIn PDF document text
    • http://manfeld.dk/images/how-to-get-free-robux-without-verification-or-surveys_GM431946152.pdfIn PDF document text
    • http://manfeld.dk/images/free-generator_GM431946152.pdfIn PDF document text
    • http://manfeld.dk/images/get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://manfeld.dk/images/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://manfeld.dk/images/free-robux-please_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
stream_004_off000051b5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x51B5 24984 bytes
SHA-256: f824432f0583b60b6fb0e8596188148bcf3292aa41bd240cb6e73acdcc881cdf
font_01_sfnt_off00008aa7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AA7 18192 bytes
SHA-256: 76f11bbbdddfe0801da3b8c29c6ab4391492d001a8f038df083dd53ec3ef9503

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