Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ef08186b10255ee…

MALICIOUS

PDF

34.8 KB Created: 2021-07-04 10:53:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 06ae3ae809e46ca6f2adff0b0659fa62 SHA-1: 253f7089e7cad2d6cd88b7d408be1e6fcfa1eb92 SHA-256: 4ef08186b10255ee03c26e98a644b2fb54788390bb31f070b6e22da98f2a5abe
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links, including one identified as a known malicious redirector, which leads to a lure for free game hacks. The document body and embedded URLs suggest a phishing attempt to trick users into visiting malicious sites, likely for credential harvesting or further malware delivery. No scripts were extracted from this sample, but the presence of malicious redirectors and lures indicates a high likelihood of a phishing or scam campaign.

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/roblox-studio-free-download-game-hack In PDF document text
    • https://www.dc-itsolutions.com/userfiles/files/minecraft-pocket-edition-download-free-pe-calculator_GM479516143.pdfIn PDF document text
    • https://www.dc-itsolutions.com/userfiles/files/how-to-get-minecraft-for-free-on-xbox-one_GM479516143.pdfIn PDF document text
    • https://www.dc-itsolutions.com/userfiles/files/microsoft-rewards-robux_GM431946152.pdfIn PDF document text
    • https://www.dc-itsolutions.com/userfiles/files/free-robux-com-roblox_GM431946152.pdfIn PDF document text
    • https://www.dc-itsolutions.com/userfiles/files/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://www.dc-itsolutions.com/userfiles/files/robux-free-hack-xyz_GM431946152.pdfIn PDF document text
    • https://www.dc-itsolutions.com/userfiles/files/roblox-kingadasouth-kingslumber-teleport-cheats_GM431946152.pdfIn PDF document text
    • https://www.dc-itsolutions.com/userfiles/files/coin-master-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • https://www.dc-itsolutions.com/userfiles/files/coinmasterfreespins_GM406889139.pdfIn PDF document text
    • https://www.dc-itsolutions.com/userfiles/files/free-texture-packs-for-minecraft-pe_GM479516143.pdfIn PDF document text
    • https://www.dc-itsolutions.com/userfiles/files/is-minecraft-free-on-switch_GM479516143.pdfIn PDF document text
    • https://www.dc-itsolutions.com/userfiles/files/roblox-mineverse-hack_GM431946152.pdfIn PDF document text
    • https://www.dc-itsolutions.com/userfiles/files/get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.dc-itsolutions.com/userfiles/files/rbx-earn_GM431946152.pdfIn PDF document text
    • https://www.dc-itsolutions.com/userfiles/files/free-robux-now_GM431946152.pdfIn PDF document text
    • https://www.dc-itsolutions.com/userfiles/files/free-college-textbooks-tiktok_GM835599320.pdfIn PDF document text
    • https://www.dc-itsolutions.com/userfiles/files/minecraft-free-play-no-download_GM479516143.pdfIn PDF document text
    • https://www.dc-itsolutions.com/userfiles/files/get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.dc-itsolutions.com/userfiles/files/hack-to-protect-village-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.dc-itsolutions.com/userfiles/files/minecraft-pe-free-apk_GM479516143.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_off00003062.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3062 22128 bytes
SHA-256: c3c42ff167e7355d6617ad45c3c9b2b7900bfa88ae8aa4697258e9cba40489a2
font_01_sfnt_off00006160.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6160 19520 bytes
SHA-256: 32abd373921e57db2f0dd1d224be69154d6949e736b02c1ad943af3dce668cbd

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