Malicious PDF — malware analysis report

Static analysis result for SHA-256 303c08bded19a662…

MALICIOUS

PDF

43.6 KB Created: 2021-06-03 08:14:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-24
MD5: d9e1f4ad7cd5d9cfd20193522ad090bc SHA-1: 4c8ed02ba5b65357c82c3810887f4b412d29f33a SHA-256: 303c08bded19a6625c4f5fd9d81509434fdba94c064aeb30544bc5c4230758ea
160 Risk Score

Malware Insights

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

The PDF document contains multiple links that redirect to malicious infrastructure, specifically targeting users interested in game hacks and free items. The heuristic firings indicate that these links are part of a known malicious redirector chain. While no scripts were directly extracted, the document's structure and embedded URLs suggest it is designed to exploit user interest and lead them to potentially harmful content or further malicious downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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 https://netcdn.online/app/431946152/how-to-hack-someone-on-roblox-game-hack In PDF document text
    • https://pustaka.widyakartika.ac.id/repository/coin-master-game-hack-link_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/coin-master-2021-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/coin-master-cheats-free_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/free-minecraft-java-code_GM479516143.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/coin-master-hacks-xyz_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/who-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/free-robux-offers_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/how-to-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/free-robux-stream_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/free-coin-master-coins_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/hacks-for-coin-master-game_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/coin-master-free-spins-and-free-coins_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/free-tiktok-followers-quick_GM835599320.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/roblox-free-robux-com_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/when-pokemon-go-free-download_GM1094591345.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/get-more-robux_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/roblox-its-free_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/como-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/how-to-hack-roblox-games_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
stream_004_off00004ead.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4EAD 24676 bytes
SHA-256: c5ed6f8052b7486dfbf28f315a6def05385322718b1485be23e7e6286008a3cd
font_01_sfnt_off000086be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86BE 18608 bytes
SHA-256: eebf4fd0ce8e014a693b7448b6f63c7fd528199174cddc1a90a23252bff1a633

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