Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d79bd1fd06e6596…

MALICIOUS

PDF

42.0 KB Created: 2021-05-13 04:44:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: eb2a3cca7f919ec1021df7bac4cb2d7f SHA-1: 670750c50231d9a77fa7340f167d8b711ed75acf SHA-256: 2d79bd1fd06e659639de5f46eed4e272457e11f91f9ee95f950c743204099be0
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to malicious redirectors, specifically advertising "free Robux" or "game hacks" to lure users. The primary malicious URL identified is https://netcdn.xyz/app/431946152/blox-land-free-robux-game-hack. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate a malicious redirector pattern, likely intended to deliver a secondary payload or phish for credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.xyz/app/431946152/blox-land-free-robux-game-hack In PDF document text
    • http://forsan.edu.eg/images/get-me-robux-for-free_GM431946152.pdfIn PDF document text
    • http://forsan.edu.eg/images/easy-roblox-today_GM431946152.pdfIn PDF document text
    • http://forsan.edu.eg/images/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
    • http://forsan.edu.eg/images/how-do-i-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://forsan.edu.eg/images/coin-master-hack-iphone_GM406889139.pdfIn PDF document text
    • http://forsan.edu.eg/images/coin-master-hack-apk-35-33_GM406889139.pdfIn PDF document text
    • http://forsan.edu.eg/images/latest-free-spin-coin-master-daily_GM406889139.pdfIn PDF document text
    • http://forsan.edu.eg/images/how-to-download-minecraft-for-free-ios_GM479516143.pdfIn PDF document text
    • http://forsan.edu.eg/images/free-spin-link-coin-master_GM406889139.pdfIn PDF document text
    • http://forsan.edu.eg/images/how-do-u-hack-roblox_GM431946152.pdfIn PDF document text
    • http://forsan.edu.eg/images/no-human-verification_GM431946152.pdfIn PDF document text
    • http://forsan.edu.eg/images/free-spins-coin-master-links-2021_GM406889139.pdfIn PDF document text
    • http://forsan.edu.eg/images/coinmasterfreespinlink_GM406889139.pdfIn PDF document text
    • http://forsan.edu.eg/images/easy-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://forsan.edu.eg/images/coin-master-hack-spins-apk-download_GM406889139.pdfIn PDF document text
    • http://forsan.edu.eg/images/coin-master-coins-free_GM406889139.pdfIn PDF document text
    • http://forsan.edu.eg/images/coin-master-spins_GM406889139.pdfIn PDF document text
    • http://forsan.edu.eg/images/coin-master-free-spins-ios-app_GM406889139.pdfIn PDF document text
    • http://forsan.edu.eg/images/blox-world-free-robux_GM431946152.pdfIn PDF document text
    • http://forsan.edu.eg/images/send-me-500-2021-spins_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_off000047ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x47ED 25300 bytes
SHA-256: 3494f3b9d81082f3ef45b393f80bb347a00dfad8020d4cc287e489db9a57ce51
font_01_sfnt_off00008111.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8111 18492 bytes
SHA-256: 43325585731fb5abef9629b4ee3027de7c41cdd34c16702b82f5d396e8a55598

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