Malicious PDF — malware analysis report

Static analysis result for SHA-256 bedeba5fa2ac7ce5…

MALICIOUS

PDF

33.0 KB Created: 2021-06-28 14:21:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-26
MD5: b8b41f52f1e8344d0520ba94ac00effa SHA-1: f741f13651d247b7d1da33207ebabea62beb4197 SHA-256: bedeba5fa2ac7ce5e3ff1904d29cd8c2429cdeda572de6ecdc68d6bb0fe67e47
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains lures for free Robux and game hacks, directing users to a known malicious redirector. The document body and embedded URLs strongly suggest a phishing or scam attempt to trick users into visiting malicious sites. No scripts were extracted, but the presence of malicious links and the lure indicate a high likelihood of a phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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 http://netcdn.co/app/431946152/who-to-get-robux-for-free-game-hack In PDF document text
    • http://lib.untad.ac.id//repository/tiktok-free-like-followers_GM835599320.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/minecraft-pe-free_GM479516143.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/free-robux-by-watching-ads_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/roblox-girl-avatar_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/free-robux-instantly_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/free-gfx-roblox_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/best-free-mask-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/how-to-get-free-roebucks-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/get-robux_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/best-free-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/minecraft-java-edition-free_GM479516143.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/qtx-v4-hack-roblox_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/how-to-hack-on-roblox-games-phone_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/1-most-best-free-hack-in-roblox-ever_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/denis-how-to-get-free-robux-i-39_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/2021-no-human-verification-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/games-on-roblox-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/free-2021-roblox-accounts-site-v3rmillionnet_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/download-hacked-games-com-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/free-robux-com-roblox_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
font_00_sfnt_off000029e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x29E8 22376 bytes
SHA-256: ba38d1034f74c3220c63d397d10f9e50c4fda1806afad48bf223fb66ff8363f5
font_01_sfnt_off00005bb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BB4 19184 bytes
SHA-256: 8e5deaed0d5f73f9df4b1456ebe88e6278b5b0ce98c5bbf46c567f2d6d7eaf20

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