Malicious PDF — malware analysis report

Static analysis result for SHA-256 6543d5359a06b796…

MALICIOUS

PDF

43.2 KB Created: 2021-05-16 04:01:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 29c715f1b2ee3a655bd80bfed90ed105 SHA-1: 5230d6fe775a63084d750c5fb05b1cb6252f0d71 SHA-256: 6543d5359a06b796e0c3fe73e84d559c297a0b4d24f43950f1c5af44835f751d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains multiple links to known malicious redirectors and infrastructure, disguised as 'free Robux generators' and game hacks. The document body and heuristics indicate a lure to trick users into visiting these sites, which likely serve as a gateway for further malicious activity such as malware downloads or phishing. No scripts were extracted, but the embedded URLs and redirector heuristics strongly suggest a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/free-robux-generator-2021-game-hack In PDF document text
    • https://omhelsjehart.nu/images/do-robux-generators-work_GM431946152.pdfIn PDF document text
    • https://omhelsjehart.nu/images/play-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • https://omhelsjehart.nu/images/generator-robux_GM431946152.pdfIn PDF document text
    • https://omhelsjehart.nu/images/free-robux-codes_GM431946152.pdfIn PDF document text
    • https://omhelsjehart.nu/images/how-to-get-free-robux-no-survey_GM431946152.pdfIn PDF document text
    • https://omhelsjehart.nu/images/roblox-lovenet_GM431946152.pdfIn PDF document text
    • https://omhelsjehart.nu/images/minecraft-servers-that-allow-hacks_GM479516143.pdfIn PDF document text
    • https://omhelsjehart.nu/images/free-roblox-accounts-2021-with-robux_GM431946152.pdfIn PDF document text
    • https://omhelsjehart.nu/images/free-minecraft-realms-to-join_GM479516143.pdfIn PDF document text
    • https://omhelsjehart.nu/images/games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://omhelsjehart.nu/images/coin-master-hack-spins-ios_GM406889139.pdfIn PDF document text
    • https://omhelsjehart.nu/images/minecraft-pe-017-0-apk-free-download-android_GM479516143.pdfIn PDF document text
    • https://omhelsjehart.nu/images/coin-master-attack-hack_GM406889139.pdfIn PDF document text
    • https://omhelsjehart.nu/images/minecraft-hack-ios_GM479516143.pdfIn PDF document text
    • https://omhelsjehart.nu/images/boku-no-roblox-hack_GM431946152.pdfIn PDF document text
    • https://omhelsjehart.nu/images/can-you-give-me-free-robux_GM431946152.pdfIn PDF document text
    • https://omhelsjehart.nu/images/scaffold-minecraft-hack_GM479516143.pdfIn PDF document text
    • https://omhelsjehart.nu/images/free-robux-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://omhelsjehart.nu/images/roblox-free-hair-girl_GM431946152.pdfIn PDF document text
    • https://omhelsjehart.nu/images/how-to-get-20210-robux-for-free_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004713.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4713 27736 bytes
SHA-256: 1341f9e423ab52e220fa01eeeb1d3922428aa9239b2f9ba722e1285f5ec7f33b
font_01_sfnt_off000084cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84CF 18748 bytes
SHA-256: fca1806ffff7593a0a2d811b077fe14576afb362c0c2e8ffc695fbf8edc3964d

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