Malicious PDF — malware analysis report

Static analysis result for SHA-256 9fa1b84de1973128…

MALICIOUS

PDF

50.6 KB Created: 2021-06-07 17:50:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 3ddf5ae0a79c2d0ccb708f6bee278c06 SHA-1: 2b5826e60fdcd50ce1e122799cf3bd8f78a1ab03 SHA-256: 9fa1b84de1973128d57c53e712c5e83724e3b612f443136b9888d67a4d25d3bb
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains multiple links to known malicious redirectors, disguised as offers for free game currency or hacks. The document body and embedded URLs strongly suggest a lure to a phishing or scam website. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate malicious redirection behavior.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9779

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/play-this-game-to-get-free-robux-game-hack In PDF document text
    • http://schottlandfieber.de/images/roblox-c9m_GM431946152.pdfIn PDF document text
    • http://schottlandfieber.de/images/how-to-get-minecraft-java-edition-for-free_GM479516143.pdfIn PDF document text
    • http://schottlandfieber.de/images/minecraft-mojang-free_GM479516143.pdfIn PDF document text
    • http://schottlandfieber.de/images/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://schottlandfieber.de/images/master-game_GM406889139.pdfIn PDF document text
    • http://schottlandfieber.de/images/free-robux-gift-card-codes_GM431946152.pdfIn PDF document text
    • http://schottlandfieber.de/images/robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://schottlandfieber.de/images/roblox-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://schottlandfieber.de/images/how-to-get-verified-on-tiktok-for-free_GM835599320.pdfIn PDF document text
    • http://schottlandfieber.de/images/coin-master-free-spins-gratis_GM406889139.pdfIn PDF document text
    • http://schottlandfieber.de/images/coin-master-claim-free-spins_GM406889139.pdfIn PDF document text
    • http://schottlandfieber.de/images/free-coin-master-game_GM406889139.pdfIn PDF document text
    • http://schottlandfieber.de/images/how-to-get-hacks-on-roblox_GM431946152.pdfIn PDF document text
    • http://schottlandfieber.de/images/coin-master-hacks-no-human-verification_GM406889139.pdfIn PDF document text
    • http://schottlandfieber.de/images/coin-master-hack-mod-apk-2021-download_GM406889139.pdfIn PDF document text
    • http://schottlandfieber.de/images/minecraft-games-online-free-no-download_GM479516143.pdfIn PDF document text
    • http://schottlandfieber.de/images/minecraft-xbox-one-free_GM479516143.pdfIn PDF document text
    • http://schottlandfieber.de/images/robux-com-free-robux_GM431946152.pdfIn PDF document text
    • http://schottlandfieber.de/images/free-spins-promo-code-for-coin-master_GM406889139.pdfIn PDF document text
    • http://schottlandfieber.de/images/roblox-free-robux_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000050ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x50ED 29824 bytes
SHA-256: 33923106af25133e72b1b25d33adaedb44c56b1659c7a4640a258efae89f3340
font_01_sfnt_off000093dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x93DD 5596 bytes
SHA-256: 9a13c2580265a78e8a7257496a31ee0055738af7e20a5661c2902efe4bf05ce5
font_02_sfnt_off0000a085.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA085 19300 bytes
SHA-256: 320e297c12ce7955e4c4fb990e27a538f48bb050e294078197e36ff6fcc15855

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