Malicious PDF — malware analysis report

Static analysis result for SHA-256 1dc384da0a5a4f1a…

MALICIOUS

PDF

44.4 KB Created: 2021-06-03 08:56:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b1cedc70864e950cd864e52c228a4c32 SHA-1: dad7b86bcb55ffe2f86868bd3e41315dbdd108f0 SHA-256: 1dc384da0a5a4f1a8860dcc570b0523cafaedf64ffc58e3afda0f2194d2751e1
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains multiple embedded URLs, including one pointing to 'netcdn.online', which are likely intended to redirect users to download malicious content. The ML classifier strongly flagged this PDF as malicious, and the presence of external URIs and a visual download lure further supports a phishing or social engineering attack pattern. No scripts were extracted, but the overall structure and embedded links suggest a downloader or redirector.

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.online/app/479516143/free-minecraft-skins-girl-game-hack In PDF document text
    • http://slims.abulyatama.ac.id//repository/pokemon-go-free-rare-candy_GM1094591345.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/coin-master-update-2021_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/pokemon-go-free-daily-spawn_GM1094591345.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/javascript-free-robux_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/pubg-uc-yatrma-sitesi_GM1330123889.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/coin-master-hack-without-human-verification-india_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/how-to-hack-roblox-to-get-robux_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/coin-master-jackpot-hack_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/coin-master-free-spins-no-human-verification_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/regal-world-coin-master_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/coin-master-links-for-today_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/how-to-get-free-robux-instantly_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/tiktok-free-download-video_GM835599320.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/free-spin-online-tool-coin-master_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/how-to-get-minecraft-for-free-2021_GM479516143.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/free-minecraft-skins-pe_GM479516143.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/easypoints-gg-roblox_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/rblx-city-free-robux_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/robux-games_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_004_off00005338.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5338 25148 bytes
SHA-256: b30d40ce65ea791900805b2710f3b03a93f3257525c7332c9fdd76adceee2de0
font_01_sfnt_off00008c92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C92 17812 bytes
SHA-256: f796763adab961c87901cbed22ac834da441fe3bf12b93a75777223d73cc2936

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