Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d4a057a71fcb25c…

MALICIOUS

PDF

34.8 KB Created: 2021-06-28 00:47:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 92e5d8d77618fd84e0fa5beda570edc3 SHA-1: 85304f8fb13c2879c27ec55d5e0336e1976f9e3b SHA-256: 3d4a057a71fcb25c863e03280bfaf53eb0e6f1edd162fdd93f36f8a7d57a0803
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for a game hack redirect lure, pointing to a malicious URL. The document body and embedded URLs reinforce this, indicating a phishing attempt to trick users into visiting a site that likely hosts malware or further scams. No scripts were extracted, but the primary attack vector is the malicious link.

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/roblox-hack-site-android-game-hack In PDF document text
    • https://www.dc-itsolutions.com/userfiles/files/get-free-spins-coin-master-link_GM406889139.pdfIn PDF document text
    • https://www.dc-itsolutions.com/userfiles/files/free-roblox-shirt-templates_GM431946152.pdfIn PDF document text
    • https://www.dc-itsolutions.com/userfiles/files/views-for-tiktok-free_GM835599320.pdfIn PDF document text
    • https://www.dc-itsolutions.com/userfiles/files/coin-master-hack-https-coinms-net_GM406889139.pdfIn PDF document text
    • https://www.dc-itsolutions.com/userfiles/files/best-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.dc-itsolutions.com/userfiles/files/roblox-rewards_GM431946152.pdfIn PDF document text
    • https://www.dc-itsolutions.com/userfiles/files/minecraft-login-free_GM479516143.pdfIn PDF document text
    • https://www.dc-itsolutions.com/userfiles/files/roblox-zone-free-robux_GM431946152.pdfIn PDF document text
    • https://www.dc-itsolutions.com/userfiles/files/coin-master-hacksco_GM406889139.pdfIn PDF document text
    • https://www.dc-itsolutions.com/userfiles/files/minecraft-java-edition-code-free_GM479516143.pdfIn PDF document text
    • https://www.dc-itsolutions.com/userfiles/files/robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.dc-itsolutions.com/userfiles/files/youtube-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.dc-itsolutions.com/userfiles/files/roblox-hack-client_GM431946152.pdfIn PDF document text
    • https://www.dc-itsolutions.com/userfiles/files/robux-free-gift-card-org-hack_GM431946152.pdfIn PDF document text
    • https://www.dc-itsolutions.com/userfiles/files/minecraft-pe-hack-client-ios_GM479516143.pdfIn PDF document text
    • https://www.dc-itsolutions.com/userfiles/files/roblox36com-free-robux_GM431946152.pdfIn PDF document text
    • https://www.dc-itsolutions.com/userfiles/files/minecraft-free-android_GM479516143.pdfIn PDF document text
    • https://www.dc-itsolutions.com/userfiles/files/any-gamepass-free-roblox-script_GM431946152.pdfIn PDF document text
    • https://www.dc-itsolutions.com/userfiles/files/how-to-use-hack-on-roblox-with-admin_GM431946152.pdfIn PDF document text
    • https://www.dc-itsolutions.com/userfiles/files/how-to-get-unlimited-robux-2021_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_off0000306a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x306A 22620 bytes
SHA-256: 0f9b7c21062321a2d8971a3f03dc755c4648e3a8a866576ec4bc23a0ef536c6a
font_01_sfnt_off000062d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62D7 19052 bytes
SHA-256: 75e0ac5835b1dba7bf556c03f5e52f77dcf86d0f0a6985b1a7770def65c770f4

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