Malicious PDF — malware analysis report

Static analysis result for SHA-256 54931de860763b3c…

MALICIOUS

PDF

46.1 KB Created: 2021-05-17 02:40:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 337981d23c5c8e91a2e74f5ea4c71a17 SHA-1: d3e0e092e049aadabf40034f3921b1938a45e4d2 SHA-256: 54931de860763b3c9528543f495312ab17dacb9858f841d2156c0dc8184f96ca
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to external URLs that are flagged as malicious redirectors, specifically promoting game hacks and generators. The document body and embedded links suggest a lure to download potentially unwanted or malicious software disguised as game cheats. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9432

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/download-coin-master-apk-hack-game-hack In PDF document text
    • http://sauer-umweltservice.de/images/hack-free-spin-coin-master_GM406889139.pdfIn PDF document text
    • http://sauer-umweltservice.de/images/how-can-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://sauer-umweltservice.de/images/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://sauer-umweltservice.de/images/free-roblox-dominus_GM431946152.pdfIn PDF document text
    • http://sauer-umweltservice.de/images/coin-master-hack-spins-app_GM406889139.pdfIn PDF document text
    • http://sauer-umweltservice.de/images/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
    • http://sauer-umweltservice.de/images/coin-master-game-free-download_GM406889139.pdfIn PDF document text
    • http://sauer-umweltservice.de/images/coin-master-free-spins-link-june-2021_GM406889139.pdfIn PDF document text
    • http://sauer-umweltservice.de/images/coin-master-free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
    • http://sauer-umweltservice.de/images/coin-master-free-spins-link-download_GM406889139.pdfIn PDF document text
    • http://sauer-umweltservice.de/images/coin-master-hack-dot-xyz_GM406889139.pdfIn PDF document text
    • http://sauer-umweltservice.de/images/lastrick-com-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://sauer-umweltservice.de/images/how-to-get-free-robux-easy-no-download_GM431946152.pdfIn PDF document text
    • http://sauer-umweltservice.de/images/coin-master-daily-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://sauer-umweltservice.de/images/coin-master-hack-apk-2021-download_GM406889139.pdfIn PDF document text
    • http://sauer-umweltservice.de/images/minecraft-rtx-download-free_GM479516143.pdfIn PDF document text
    • http://sauer-umweltservice.de/images/microsoft-free-robux_GM431946152.pdfIn PDF document text
    • http://sauer-umweltservice.de/images/blox-land-free-robux_GM431946152.pdfIn PDF document text
    • http://sauer-umweltservice.de/images/easy-way-to-get-robux_GM431946152.pdfIn PDF document text
    • http://sauer-umweltservice.de/images/coin-master-heaven-free-spins-link_GM406889139.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_off00004dc4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4DC4 25668 bytes
SHA-256: 1d8a6bddac0e48bd2d8e433780a47bfbd8c3f6c4914268c1f511e7a89a7f1556
font_01_sfnt_off00008722.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8722 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off0000910d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x910D 18472 bytes
SHA-256: 889c97ae1e8c5f6287d7e9e9a77de81d4c7f2c24e7ca8efa3945bbdf42481e01

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