Malicious PDF — malware analysis report

Static analysis result for SHA-256 d446bb62aa9cdb52…

MALICIOUS

PDF

36.8 KB Created: 2021-06-26 08:20:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 3315fbd2ffa6c6dd83c0befb87dd2a77 SHA-1: 8125840743cfbbe62c08893e09fca78b37c6ba95 SHA-256: d446bb62aa9cdb52273d4795384bc51c6bed11fa9aef8803e25e56a8e1b3e62c
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to infrastructure designed to host malicious content. The document body also contains a call-to-action phrase and the malicious URL, reinforcing the lure. While no scripts were extracted, the presence of a malicious redirector and the ML classifier's high confidence indicate a high likelihood of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 3

  • 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 http://netcdn.co/app/431946152/how-to-hack-someone In PDF document text
    • https://e-learning.man-purwakarta.sch.id/__statics/gudangsoal/files/robux-free-2021_GM431946152.pdfIn PDF document text
    • https://www.e-learning.man-purwakarta.sch.id/__statics/gudangsoal/files/free-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.e-learning.man-purwakarta.sch.id/__statics/gudangsoal/files/how-to-make-a-minecraft-bedrock-server-for-free_GM479516143.pdfIn PDF document text
    • https://www.e-learning.man-purwakarta.sch.id/__statics/gudangsoal/files/cool-minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://www.e-learning.man-purwakarta.sch.id/__statics/gudangsoal/files/free-robux-place_GM431946152.pdfIn PDF document text
    • https://e-learning.man-purwakarta.sch.id/__statics/gudangsoal/files/free-robux-games_GM431946152.pdfIn PDF document text
    • https://e-learning.man-purwakarta.sch.id/__statics/gudangsoal/files/get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://e-learning.man-purwakarta.sch.id/__statics/gudangsoal/files/robloxcom-avatar-free_GM431946152.pdfIn PDF document text
    • https://www.e-learning.man-purwakarta.sch.id/__statics/gudangsoal/files/will-minecraft-dungeons-be-free_GM479516143.pdfIn PDF document text
    • https://e-learning.man-purwakarta.sch.id/__statics/gudangsoal/files/free-girl-clothes-roblox_GM431946152.pdfIn PDF document text
    • https://www.e-learning.man-purwakarta.sch.id/__statics/gudangsoal/files/get-free-tiktok-followers_GM835599320.pdfIn PDF document text
    • https://www.e-learning.man-purwakarta.sch.id/__statics/gudangsoal/files/free-robux-hack-generator_GM431946152.pdfIn PDF document text
    • https://e-learning.man-purwakarta.sch.id/__statics/gudangsoal/files/easy-robux_GM431946152.pdfIn PDF document text
    • https://e-learning.man-purwakarta.sch.id/__statics/gudangsoal/files/free-xbox-packages-on-roblox_GM431946152.pdfIn PDF document text
    • https://e-learning.man-purwakarta.sch.id/__statics/gudangsoal/files/robux-hack-generator_GM431946152.pdfIn PDF document text
    • https://www.e-learning.man-purwakarta.sch.id/__statics/gudangsoal/files/escape-room-roblox-cheats-enchanted-forest-secret-password_GM431946152.pdfIn PDF document text
    • https://e-learning.man-purwakarta.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://www.e-learning.man-purwakarta.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-jailbreak-ios_GM431946152.pdfIn PDF document text
    • https://www.e-learning.man-purwakarta.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
    • https://www.e-learning.man-purwakarta.sch.id/__statics/gudangsoal/files/roblox-entrepreneur-tycoon-cheats_GM431946152.pdfIn PDF document text
    • https://www.roblox.com/.IIn 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
font_00_sfnt_off00003638.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3638 22420 bytes
SHA-256: 0eea0fa1d0caa4a80eeb9d79b54f0f97f02893b3c56ed9084ec02c12c6c4fda2
font_01_sfnt_off00006832.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6832 20048 bytes
SHA-256: 91a512f1fbdc769db0fafec8315c3fc1e5760486f5a92a5f09d46ff5e8eb1a7f

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