Malicious PDF — malware analysis report

Static analysis result for SHA-256 d084a80116023ffb…

MALICIOUS

PDF

44.9 KB Created: 2021-06-03 23:16:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 81e76a3b83ce448d628a56ab08ac8fd8 SHA-1: 9b97e2f6373da68fed2ea6e8eba43ad1371c0345 SHA-256: d084a80116023ffb1e302685589fbf5f29ffcb8d1652a66d17b8c483680f207b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'free generator / game hack' lures. The primary malicious URL identified is https://netcdn.online/app/479516143/how-can-you-get-minecraft-for-free-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a social engineering attack aimed at tricking users into visiting malicious sites, likely for malware distribution or credential harvesting.

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/how-can-you-get-minecraft-for-free-game-hack In PDF document text
    • http://lib.stimykpn.ac.id//repository/free-minecraft-skins-java_GM479516143.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/robux-com-free_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-roblox-card_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/minecraft-apk-download-free-11-055_GM479516143.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/minecraft-life-hacks_GM479516143.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/pixies-gigantic-coin-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-printable-minecraft-coloring-pages_GM479516143.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/wurst_GM479516143.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/scaffold-minecraft-hack_GM479516143.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/how-to-get-robux-easy_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/robux-hack_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/flowify-hacks-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/minecraft-online-free-download_GM479516143.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/free-coin-app_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/real-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/coin-master-daily-spin-link-app_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/coun-master_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-disney-plus-accounts-tiktok_GM835599320.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/i-cant-get-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/coin-master-on-facebook_GM406889139.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_off0000543c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x543C 25528 bytes
SHA-256: b46b5b9073543ec0919177577c11123e97f0b961c6dfd09cefaeef06d40cff59
font_01_sfnt_off00008d5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D5F 18176 bytes
SHA-256: 496991d5a760fd596b7ce23c6639e8b030b747c8e4be97118aa62bfd0f632ec2

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