Malicious PDF — malware analysis report

Static analysis result for SHA-256 410a6d4c8ede1f4c…

MALICIOUS

PDF

34.1 KB Created: 2021-07-05 18:21:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: c7477c3ebf67e4b41da8208b86aff00b SHA-1: f714efd9caac9468b00875e993f25d1c7e29a4c8 SHA-256: 410a6d4c8ede1f4cf82c8c118aba0e43e24d6e27f0707bdc02a17f405dbdb7cc
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains multiple links to a known malicious redirector, masquerading as a 'free generator / game hack' for Robux. The document body and embedded URLs strongly suggest a phishing or scam attempt to lure users to malicious websites. While no scripts were explicitly extracted, the PDF structure and malicious links indicate a high likelihood of exploitation for client execution via embedded JavaScript or other PDF-specific vulnerabilities.

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.tw/app/431946152/how-to-get-free-robux-instantly-game-hack In PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/cool-roblox-avatar-free_GM431946152.pdfIn PDF document text
    • https://perpustakaan.iahntp.ac.id/repository/roblox-knife-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/free-robux-no-verification-required_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/hack-to-get-robux-2021_GM431946152.pdfIn PDF document text
    • https://perpustakaan.iahntp.ac.id/repository/rbxoffer-com-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/world-zero-roblox-cheat_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://perpustakaan.iahntp.ac.id/repository/how-hack-roblox-games_GM431946152.pdfIn PDF document text
    • https://perpustakaan.iahntp.ac.id/repository/how-get-robux-free-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/coin-master-how-to-get-japan-sushi-card-free_GM406889139.pdfIn PDF document text
    • https://perpustakaan.iahntp.ac.id/repository/console-free-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.iahntp.ac.id/repository/how-to-hack-any-game-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/roblox-cheat-robux-2021-pc_GM431946152.pdfIn PDF document text
    • https://perpustakaan.iahntp.ac.id/repository/roblox-noclip-in-cheat-engine-2021_GM431946152.pdfIn PDF document text
    • https://perpustakaan.iahntp.ac.id/repository/cheat-arsenal-roblox_GM431946152.pdfIn PDF document text
    • https://perpustakaan.iahntp.ac.id/repository/free-robux-not-a-scam-ehclips_GM431946152.pdfIn PDF document text
    • https://perpustakaan.iahntp.ac.id/repository/descargar-roblox-hackeado-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/free-robux-games_GM431946152.pdfIn PDF document text
    • https://perpustakaan.iahntp.ac.id/repository/bloxburg-roblox-free-download_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/coin-master-hack_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_off00002e9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E9D 22172 bytes
SHA-256: 3ab6f4cd894a5824b769b6b379555ce7c858ab33431a5a476f2da396885f8736
font_01_sfnt_off00005f70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F70 19240 bytes
SHA-256: 46dd4588562bbb2dce6134725fa943138dd103635f5b260b652d173228825468

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