Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba0af515b08db78b…

MALICIOUS

PDF

33.1 KB Created: 2021-06-28 19:18:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-02
MD5: a0b1a3043a8640be23c0c794370d0e47 SHA-1: 26d977dfe20afdb95187fb8bb859839d3e8522c1 SHA-256: ba0af515b08db78ba2ec26eae888687791242312c4f55ce9a12f4f8682e442ec
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one that redirects to known malicious infrastructure associated with game hacks and generators. The presence of a visual download button lure and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content. No scripts were extracted, but the embedded URLs and heuristic firings strongly suggest a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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/stella-roblox-hack-game-hack In PDF document text
    • https://digilib.widyagamahusada.ac.id/repository/cheat-robux-roblox-2021-free_GM431946152.pdfIn PDF document text
    • https://digilib.widyagamahusada.ac.id/repository/teach-me-to-hack_GM431946152.pdfIn PDF document text
    • https://digilib.widyagamahusada.ac.id/repository/how-to-get-free-robux-games_GM431946152.pdfIn PDF document text
    • https://digilib.widyagamahusada.ac.id/repository/roblox-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://digilib.widyagamahusada.ac.id/repository/dansploit-roblox-hack_GM431946152.pdfIn PDF document text
    • https://digilib.widyagamahusada.ac.id/repository/roblox-blob-simulator-hacks_GM431946152.pdfIn PDF document text
    • https://digilib.widyagamahusada.ac.id/repository/minecraft-linux-free_GM479516143.pdfIn PDF document text
    • https://digilib.widyagamahusada.ac.id/repository/minecraft-education-edition-free-download_GM479516143.pdfIn PDF document text
    • https://digilib.widyagamahusada.ac.id/repository/coin-master-rewards-free-spins_GM406889139.pdfIn PDF document text
    • https://digilib.widyagamahusada.ac.id/repository/how-to-edit-roblox-hacks_GM431946152.pdfIn PDF document text
    • https://digilib.widyagamahusada.ac.id/repository/rbx-hut_GM431946152.pdfIn PDF document text
    • https://digilib.widyagamahusada.ac.id/repository/coin-master-pet-food-hack_GM406889139.pdfIn PDF document text
    • https://digilib.widyagamahusada.ac.id/repository/wurst_GM479516143.pdfIn PDF document text
    • https://digilib.widyagamahusada.ac.id/repository/lukignton-international-airport-free-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.widyagamahusada.ac.id/repository/khaos-free-robuxcom_GM431946152.pdfIn PDF document text
    • https://digilib.widyagamahusada.ac.id/repository/free-roblox-usernames-and-passwords-with-robux_GM431946152.pdfIn PDF document text
    • https://digilib.widyagamahusada.ac.id/repository/coin-master-free-spinv1-0apkpure-com-apk_GM406889139.pdfIn PDF document text
    • https://digilib.widyagamahusada.ac.id/repository/how-to-get-free-roebucks-on-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.widyagamahusada.ac.id/repository/is-it-possible-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://digilib.widyagamahusada.ac.id/repository/coin-master-free-spins-hack-iphone_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_off00002ea5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EA5 21336 bytes
SHA-256: 2105bddea1ecabc4e9fc1cfdf6241af3a43011b0ec10b947d301f81fb13d521c
font_01_sfnt_off00005ced.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CED 18760 bytes
SHA-256: 6a0dedaa878db1eca798abd64b77266e074ace57b762830ce410ef859105b1ea

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