Malicious PDF — malware analysis report

Static analysis result for SHA-256 e39dcf2b6ef75f1f…

MALICIOUS

PDF

34.6 KB Created: 2021-06-17 16:51:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23
MD5: 36e469ef52a62e734cc809ff30c8a396 SHA-1: 39b5fa0c433a62155a3dff0fdfcdf55f927036dd SHA-256: e39dcf2b6ef75f1f84909a304540ec44a0599d392c520dd1192a52d340b9d419
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that lead to known malicious redirector infrastructure, specifically advertising 'game hacks' and 'generators'. The primary lure URL is http://netcdn.co/app/431946152/how-to-download-roblox-hack-client-game-hack, which is designed to trick users into downloading potentially unwanted or malicious software. No scripts were extracted, but the document's structure and embedded URLs strongly suggest a phishing or social engineering attack.

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/how-to-download-roblox-hack-client-game-hack In PDF document text
    • https://www.opertus-me.com/uploaded_files/userfiles/files/free-spins-coin-master-october-17-2021_GM406889139.pdfIn PDF document text
    • https://www.opertus-me.com/uploaded_files/userfiles/files/roblox-hacks-not-resonding_GM431946152.pdfIn PDF document text
    • https://www.opertus-me.com/uploaded_files/userfiles/files/get-robux-free-fast-no-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://www.opertus-me.com/uploaded_files/userfiles/files/dance-hacks-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.opertus-me.com/uploaded_files/userfiles/files/coin-master-hoe-to-get-extra-free-spins_GM406889139.pdfIn PDF document text
    • https://www.opertus-me.com/uploaded_files/userfiles/files/minecraft-windows-free_GM479516143.pdfIn PDF document text
    • https://www.opertus-me.com/uploaded_files/userfiles/files/free-robux-microsoft_GM431946152.pdfIn PDF document text
    • https://www.opertus-me.com/uploaded_files/userfiles/files/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • https://www.opertus-me.com/uploaded_files/userfiles/files/free-spin-coin-master-iphone_GM406889139.pdfIn PDF document text
    • https://www.opertus-me.com/uploaded_files/userfiles/files/how-to-get-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.opertus-me.com/uploaded_files/userfiles/files/coin-master-heaven-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • https://www.opertus-me.com/uploaded_files/userfiles/files/roblox-free-group-ad_GM431946152.pdfIn PDF document text
    • https://www.opertus-me.com/uploaded_files/userfiles/files/links-for-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://www.opertus-me.com/uploaded_files/userfiles/files/coin-master-hack-8-ball-pool_GM406889139.pdfIn PDF document text
    • https://www.opertus-me.com/uploaded_files/userfiles/files/descargar-roblox-hackeado-con-robux-infinitos_GM431946152.pdfIn PDF document text
    • https://www.opertus-me.com/uploaded_files/userfiles/files/coin-master-hack-apk-download-latest-version_GM406889139.pdfIn PDF document text
    • https://www.opertus-me.com/uploaded_files/userfiles/files/free-robux-no-anti-bot-verification_GM431946152.pdfIn PDF document text
    • https://www.opertus-me.com/uploaded_files/userfiles/files/robux-for-surveys_GM431946152.pdfIn PDF document text
    • https://www.opertus-me.com/uploaded_files/userfiles/files/coin-master-daily-free-spins-hack_GM406889139.pdfIn PDF document text
    • https://www.opertus-me.com/uploaded_files/userfiles/files/hack-de-coin-master_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_off00003186.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3186 21892 bytes
SHA-256: bcf6f28fce24fa1b0ec01288c40818e12983cbc765a85b9d9408d250f2014ece
font_01_sfnt_off000061a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61A6 19200 bytes
SHA-256: ac99dd915eb2ed3bc919e25a7d31e9fca84e374f120f8bcc9c01a9ae884fa20e

Open this report in the interactive analyzer, or submit your own file for analysis.