Malicious PDF — malware analysis report

Static analysis result for SHA-256 2caca79c31424c02…

MALICIOUS

PDF

46.5 KB Created: 2021-05-12 14:38:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 54d3d0654e7e791106418acf448fa73f SHA-1: 838bd598ef4f5a98560bb0fc480857de7ca80b34 SHA-256: 2caca79c31424c021aa83c030987f263abd7705f9be1b3fb30b3519ba0fa6b6e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains multiple links to known malicious redirectors and infrastructure, masquerading as a "free generator / game hack" lure. The document body, though partially corrupted, contains references to Roblox and game hacks, reinforcing the lure. The embedded links likely lead to further malicious content or malware downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

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/roblox-army-free-robux-game-hack In PDF document text
    • http://dohafashionstores.com/uploaded_files/userfiles/files/free-robux-redeem-codes-2021_GM431946152.pdfIn PDF document text
    • http://www.dohafashionstores.com/uploaded_files/userfiles/files/free-roblox-templates_GM431946152.pdfIn PDF document text
    • http://www.dohafashionstores.com/uploaded_files/userfiles/files/coin-master-free-spin-and-coin-links_GM406889139.pdfIn PDF document text
    • http://dohafashionstores.com/uploaded_files/userfiles/files/password-free-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://dohafashionstores.com/uploaded_files/userfiles/files/free-coins-coin-master-link_GM406889139.pdfIn PDF document text
    • http://www.dohafashionstores.com/uploaded_files/userfiles/files/coin-master-hack-tool-pc_GM406889139.pdfIn PDF document text
    • http://www.dohafashionstores.com/uploaded_files/userfiles/files/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://www.dohafashionstores.com/uploaded_files/userfiles/files/coin-spin-link_GM406889139.pdfIn PDF document text
    • http://dohafashionstores.com/uploaded_files/userfiles/files/coin-master-spin-link-today-2021_GM406889139.pdfIn PDF document text
    • http://dohafashionstores.com/uploaded_files/userfiles/files/free-robux-no-verification-no-download-2021_GM431946152.pdfIn PDF document text
    • http://www.dohafashionstores.com/uploaded_files/userfiles/files/easy-ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://dohafashionstores.com/uploaded_files/userfiles/files/free-minecraft-svg-cutting-files_GM479516143.pdfIn PDF document text
    • http://www.dohafashionstores.com/uploaded_files/userfiles/files/coin-master-coins_GM406889139.pdfIn PDF document text
    • http://www.dohafashionstores.com/uploaded_files/userfiles/files/coin-master-free-coins-link-2021_GM406889139.pdfIn PDF document text
    • http://www.dohafashionstores.com/uploaded_files/userfiles/files/coin-master-free-spin-codes_GM406889139.pdfIn PDF document text
    • http://dohafashionstores.com/uploaded_files/userfiles/files/how-to-play-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • http://dohafashionstores.com/uploaded_files/userfiles/files/roblox-studio-free-robux_GM431946152.pdfIn PDF document text
    • http://dohafashionstores.com/uploaded_files/userfiles/files/descargar-coin-master-hackeado_GM406889139.pdfIn PDF document text
    • http://www.dohafashionstores.com/uploaded_files/userfiles/files/free-spin-links-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.dohafashionstores.com/uploaded_files/userfiles/files/coin-master-free-cards-link_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004b11.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B11 25948 bytes
SHA-256: e4376900cf88be25d00919e7d1b0f952780dd458624a6585b90455547645ea54
font_01_sfnt_off000085f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85F5 5596 bytes
SHA-256: 9a13c2580265a78e8a7257496a31ee0055738af7e20a5661c2902efe4bf05ce5
font_02_sfnt_off0000929d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x929D 18528 bytes
SHA-256: 3fb3182e9b0518fecce2d6326c4443e9fc052433b5a2fc23416796f92e2510b3

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