Malicious PDF — malware analysis report

Static analysis result for SHA-256 12c1b46d6b0e4137…

MALICIOUS

PDF

34.2 KB Created: 2021-06-30 05:06:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: b4be74c63b49d5e6b05374557eeac414 SHA-1: 2698a996380bb361a3975c9ef7ea3abbd464dd20 SHA-256: 12c1b46d6b0e4137868166691df27bb9c9483fd43dbf5a7a3c4c2ff09ed55d8d
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded URLs that are flagged as malicious redirectors, specifically pointing to sites offering game hacks and free currency. The document body and heuristics indicate a lure for popular games, aiming to trick users into visiting these malicious sites. No scripts were extracted, but the presence of malicious URLs and the lure suggest the document's primary purpose is to redirect users to potentially harmful content.

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/roblox.land-free-robux-game-hack In PDF document text
    • http://lib.teknik.unimal.ac.id/repository/roblox-help-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/spin-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/pubg-600-uc-in-pakistani-rupees_GM1330123889.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/coin-master-hacks-xyz_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/free-minecraft-skin-maker_GM479516143.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/how-to-get-robux-without-paying_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/how-to-get-free-robux-on-roblox-ctrl-s_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/roblox-4all-hack_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/how-to-get-free-skins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/how-do-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/how-to-get-free-robux-no-hack-no-scam_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/free-fire-tik-tok_GM835599320.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/aternos-free-minecraft-server_GM479516143.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/easy-robux-generator_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/how-to-glitch-builders-club-for-free-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/free-roblox-groups_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/how-do-i-get-free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/coin-spin_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/robux-for-free-works_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/coin-master-free-spins-bit-ly_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
font_00_sfnt_off00002f63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F63 22064 bytes
SHA-256: aebb2eb8e4ac10d4d680682ce893265c3dcda0044be60f10d8b00a733427d12f
font_01_sfnt_off00006079.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6079 19028 bytes
SHA-256: a93323082296cf958678014370d3587bbda9cba9fde14f9adf68a5fa846343d4

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