Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba2d03d241b8c428…

MALICIOUS

PDF

33.8 KB Created: 2021-06-20 04:19:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: f261b979b9226e906079e39be8ba5fd1 SHA-1: 3a120338ecd6669361be8a2271df98cfd25d2de7 SHA-256: ba2d03d241b8c42867b989f4ad669794ee50cdffc3217a9fc1022dcdca86092a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains embedded links that redirect to malicious infrastructure, specifically promoting 'game hacks' and 'free currency' lures. The primary redirect URL is http://netcdn.co/app/431946152/roblox-animation-free-game-hack. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate a malicious redirector designed to lure users into potentially downloading further malware or engaging in phishing activities. The presence of a visual download button heuristic further supports this malicious workflow.

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/roblox-animation-free-game-hack In PDF document text
    • http://pustaka.ust.ac.id/repository/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/robux-hack-no-survey-no-download-no-password_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/coin-master-codes_GM406889139.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/free-robux-easy_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/free-vip-servers-roblox-strucid_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/free-robux-and-catalog_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/roblox-arsenal-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/coin-master-pet-food-free_GM406889139.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/how-to-get-free-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/how-to-make-a-private-server-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/roblox-piano-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/robux-get-com_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/como-conseguir-monedas-infinitas-y-tiradas-de-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/how-do-you-download-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/free-coin-master-spins-links-2021_GM406889139.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/hack-robux-pastebin-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/roblox-how-to-get-free-wings_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/robux-free-online_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002cb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2CB6 22472 bytes
SHA-256: 8da1b0aeb99f082aa5ed2fdcc1f9305ee037e12b3aa926faa3c24e04652bf3d9
font_01_sfnt_off00005ec8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EC8 19132 bytes
SHA-256: bd832a98a43b84cf0168b78b491e1e048900f1fb76b2961f986df2a5f0e50e81

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