Malicious PDF — malware analysis report

Static analysis result for SHA-256 77eef609d3775e31…

MALICIOUS

PDF

41.6 KB Created: 2021-05-13 16:35:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b65f0c0fae0a4408c5b6ba03d794490f SHA-1: a56a59150a5ef77c6c952aefb067eb7681f189e1 SHA-256: 77eef609d3775e31c1b7125c8bf7d9e311635cff78936d4c954f0fccd9b79fad
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to known malicious infrastructure, specifically promoting 'game hacks' and 'free generators'. The ML classifier also flagged this PDF with high confidence. The document body, though heavily obfuscated, contains URLs that are consistent with a phishing or malware distribution lure. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/479516143/hack-minecraft-game-hack In PDF document text
    • http://schottlandfieber.de/images/free-robux-download_GM431946152.pdfIn PDF document text
    • http://schottlandfieber.de/images/free-coin-master-coins_GM406889139.pdfIn PDF document text
    • http://schottlandfieber.de/images/gaming-dunia-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://schottlandfieber.de/images/is-roblox-free-on-ps4_GM431946152.pdfIn PDF document text
    • http://schottlandfieber.de/images/how-to-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • http://schottlandfieber.de/images/minecraft-tools_GM479516143.pdfIn PDF document text
    • http://schottlandfieber.de/images/free-robux-instantly_GM431946152.pdfIn PDF document text
    • http://schottlandfieber.de/images/op-rewards-free-robux_GM431946152.pdfIn PDF document text
    • http://schottlandfieber.de/images/coin-master-500-free-spins_GM406889139.pdfIn PDF document text
    • http://schottlandfieber.de/images/114-hacks_GM479516143.pdfIn PDF document text
    • http://schottlandfieber.de/images/free-roblox-clothes_GM431946152.pdfIn PDF document text
    • http://schottlandfieber.de/images/free-robux-no-human-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://schottlandfieber.de/images/free-robux-link_GM431946152.pdfIn PDF document text
    • http://schottlandfieber.de/images/lazyblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://schottlandfieber.de/images/free-minecraft-mods-for-ps4_GM479516143.pdfIn PDF document text
    • http://schottlandfieber.de/images/coin-master-free-spins-link-fb_GM406889139.pdfIn PDF document text
    • http://schottlandfieber.de/images/games-that-can-be-hacked_GM431946152.pdfIn PDF document text
    • http://schottlandfieber.de/images/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://schottlandfieber.de/images/free-roblox-accounts-2021-with-robux_GM431946152.pdfIn PDF document text
    • http://schottlandfieber.de/images/free-robux-generator-no-human-verification_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
stream_003_off00004807.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4807 25628 bytes
SHA-256: 9662c2803cfffc481fbc2593ab7ca0c57ad9786c0493bb2ad1c4e4faa5621d9f
font_01_sfnt_off000081f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81F1 17740 bytes
SHA-256: b48554faafe2bce709b64b5b5bb2139c5dbee2e20b18b96283c95ec436c1b8f7

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