Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc6d657907e5682b…

MALICIOUS

PDF

44.7 KB Created: 2021-06-09 15:49:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-24
MD5: f217be756e0038b09d60bddec977487e SHA-1: f1fadaba497573b712c3e4fc3dd03a4fcadbd703 SHA-256: dc6d657907e5682bcf41979ff8b4eb98220ef9e3046fde0bd8acd9393d9db26f
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to malicious infrastructure, specifically promoting 'free Robux' scams. The presence of a visual download button further supports the lure. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a phishing or scam attempt designed to lead users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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 https://netcdn.tw/app/431946152/foxyhacks.com-free-robux-game-hack In PDF document text
    • https://digilib.stimlog.ac.id/repository/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/free-minecraft-education-edition_GM479516143.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/free-minecraft-printables_GM479516143.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/free-things-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/free-robux-on-phone_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/minecraft-server-free-trial_GM479516143.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/rbl-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/free-robux-sites-that-work_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/2-accounts-on-one-pc-for-hack-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-modded-minecraft-server_GM479516143.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/coin-master-free-spins-1-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/how-to-download-roblox-hack-apk_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/coin-master-real-free-spins_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/minecraft-font-free_GM479516143.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/free-roblox-gear_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/how-to-get-100-robux-for-free_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/hacks-para-roblox-jailbreak-dinero_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/elleternate-roblox-2021-rolox-hack_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_off00005025.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5025 24984 bytes
SHA-256: d05f9e62ab72aff6be3cb4e447088f67be1110ae20e82e07326b4b1ee346e6cf
font_01_sfnt_off000089fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89FC 19084 bytes
SHA-256: 82723c10aa1c2d1f2b1c347e723c017c97db8bc8fe9a35f9f8cd5c5e82c544ab

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