Malicious PDF — malware analysis report

Static analysis result for SHA-256 1eb2a8193bcea7d9…

MALICIOUS

PDF

34.3 KB Created: 2021-07-06 13:15:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: f2aea12bda8e81b1fede166916d1bfda SHA-1: 5e01ddde21e0cf7fe2db1123615c852b4155725c SHA-256: 1eb2a8193bcea7d969ceb9ed58b34bbb199e50d7d8aefc3a35249dff235ce16b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one to a known malicious redirector infrastructure at http://netcdn.tw/app/431946152/earn-free-robux-on-roblox-game-hack. This lure is presented as a 'free generator / game hack', aiming to trick users into clicking through to potentially malicious content. No scripts were extracted, but the presence of malicious redirectors and the lure suggest a phishing or malware distribution attempt.

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/earn-free-robux-on-roblox-game-hack In PDF document text
    • http://www.elsire.co.in/uploaded_files/userfiles/files/minecraft-java-hacks_GM479516143.pdfIn PDF document text
    • http://www.elsire.co.in/uploaded_files/userfiles/files/minecraft-hacks-pc_GM479516143.pdfIn PDF document text
    • http://www.elsire.co.in/uploaded_files/userfiles/files/free-coin-app_GM406889139.pdfIn PDF document text
    • http://www.elsire.co.in/uploaded_files/userfiles/files/roblox-hack-apk-android-1_GM431946152.pdfIn PDF document text
    • http://www.elsire.co.in/uploaded_files/userfiles/files/roblox-free-clothes-hack_GM431946152.pdfIn PDF document text
    • http://www.elsire.co.in/uploaded_files/userfiles/files/fd-hacks-roblox_GM431946152.pdfIn PDF document text
    • http://www.elsire.co.in/uploaded_files/userfiles/files/coin-master-hack-apk-2021_GM406889139.pdfIn PDF document text
    • http://www.elsire.co.in/uploaded_files/userfiles/files/how-to-get-free-robux-without-downloading-any-apps_GM431946152.pdfIn PDF document text
    • http://www.elsire.co.in/uploaded_files/userfiles/files/how-to-hack-someones-account-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.elsire.co.in/uploaded_files/userfiles/files/free-robux-download-apps_GM431946152.pdfIn PDF document text
    • http://www.elsire.co.in/uploaded_files/userfiles/files/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://www.elsire.co.in/uploaded_files/userfiles/files/how-to-get-free-roebucks-in-roblox_GM431946152.pdfIn PDF document text
    • http://www.elsire.co.in/uploaded_files/userfiles/files/robux-hack-inspect-2021_GM431946152.pdfIn PDF document text
    • http://www.elsire.co.in/uploaded_files/userfiles/files/roblox-studio-download-free-for-ipad_GM431946152.pdfIn PDF document text
    • http://www.elsire.co.in/uploaded_files/userfiles/files/my-roblox-account-got-hacked-what-do-i-do_GM431946152.pdfIn PDF document text
    • http://www.elsire.co.in/uploaded_files/userfiles/files/how-to-get-any-roblox-game-pass-for-free_GM431946152.pdfIn PDF document text
    • http://www.elsire.co.in/uploaded_files/userfiles/files/como-ganar-robux-sin-hacks_GM431946152.pdfIn PDF document text
    • http://www.elsire.co.in/uploaded_files/userfiles/files/roblox-download-pc-free_GM431946152.pdfIn PDF document text
    • http://www.elsire.co.in/uploaded_files/userfiles/files/how-to-hack-roblox-ninja-assassin_GM431946152.pdfIn PDF document text
    • http://www.elsire.co.in/uploaded_files/userfiles/files/free-roblox-gfx_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
font_00_sfnt_off00003107.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3107 21968 bytes
SHA-256: 583db1d3176b0071dfd625e261020eb77f811175a2f1c76aa9c6b2807f2c5fce
font_01_sfnt_off000061d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61D3 18788 bytes
SHA-256: af3555bc1f517b69886570aade67a9791766090da4e1e41d0d69d2926e00b478

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