Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b9b5ea5c88397e2…

MALICIOUS

PDF

43.6 KB Created: 2021-06-08 00:14:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: bd1a8b9daec242a8888a7b21d0812e3c SHA-1: 7be1d7dc214c7be88e7bc2324eca59287179dd21 SHA-256: 6b9b5ea5c88397e2359d59ec418214c737d312972c5ee8ad544e6b8a27450208
160 Risk Score

Malware Insights

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

The PDF document contains multiple links to redirector infrastructure, specifically targeting users interested in game hacks and generators. The primary link, 'https://netcdn.tw/app/431946152/elysian-roblox-hacks-game-hack', is identified as a malicious redirector. This suggests the document is designed to lead users to potentially harmful websites, likely for further exploitation or credential harvesting.

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.tw/app/431946152/elysian-roblox-hacks-game-hack In PDF document text
    • https://lesegais.ru/images/coin-master-free-spins-link-deutsch-ios_GM406889139.pdfIn PDF document text
    • https://lesegais.ru/images/roblox-report-hacker_GM431946152.pdfIn PDF document text
    • https://lesegais.ru/images/hack-coin-master-apk-2021_GM406889139.pdfIn PDF document text
    • https://lesegais.ru/images/robux-link_GM431946152.pdfIn PDF document text
    • https://lesegais.ru/images/coin-master-hack-spin-generator-tool_GM406889139.pdfIn PDF document text
    • https://lesegais.ru/images/how-to-get-free-roblox-gift-cards_GM431946152.pdfIn PDF document text
    • https://lesegais.ru/images/minecraft-bedrock-edition-pc-free_GM479516143.pdfIn PDF document text
    • https://lesegais.ru/images/robux-hacks-2021_GM431946152.pdfIn PDF document text
    • https://lesegais.ru/images/roblox-free-roblox_GM431946152.pdfIn PDF document text
    • https://lesegais.ru/images/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://lesegais.ru/images/hack-coin-master-8-ball-pool_GM406889139.pdfIn PDF document text
    • https://lesegais.ru/images/coin-master-free-cards-link-2021-today_GM406889139.pdfIn PDF document text
    • https://lesegais.ru/images/how-to-hack-golden-card-in-coin-master_GM406889139.pdfIn PDF document text
    • https://lesegais.ru/images/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • https://lesegais.ru/images/multiplayer-master-hack-coins_GM406889139.pdfIn PDF document text
    • https://lesegais.ru/images/today-coin-master-free-coins-link_GM406889139.pdfIn PDF document text
    • https://lesegais.ru/images/roblox-bloxburg-hack_GM431946152.pdfIn PDF document text
    • https://lesegais.ru/images/coin-master-35-2-hack_GM406889139.pdfIn PDF document text
    • https://lesegais.ru/images/how-to-get-free-robux-without-download-apps-or-survey_GM431946152.pdfIn PDF document text
    • https://lesegais.ru/images/best-free-roblox-executor_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_off00004d04.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4D04 25204 bytes
SHA-256: 0d09ff9f7fb448187b28d4dbdf36c4624206e1f9b5145d753091a0665ba1644e
font_01_sfnt_off0000872f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x872F 18484 bytes
SHA-256: 85d34a60cd4c516aa6a47b3ef5f6c8b19949182901f2114353849d877ebd8d17