Malicious PDF — malware analysis report

Static analysis result for SHA-256 eeb505db1111ed8f…

MALICIOUS

PDF

45.2 KB Created: 2021-06-04 03:30:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-16
MD5: a0d203dd05846d6f3fee02d34502fdfa SHA-1: 6802e32f0e0ba570efa6301bf6181639827eaae0 SHA-256: eeb505db1111ed8f4cd156e8c58777bbd475421b43175da68d8b1ef02cf2344a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to a known malicious domain, masquerading as a game hack. The ML classifier also flagged this PDF as malicious. The presence of a visual download button further supports the lure. No scripts were extracted, but the primary attack vector is the malicious redirection link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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.online/app/431946152/bhop-cheats-roblox-game-hack In PDF document text
    • http://library.patria-artha.ac.id/repository/free-robux-no-apps_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/hack-roblox-hack-free_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/hack-a-game_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/coin-master-free-daily-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/free-vip-server-roblox_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/coin-master-hack-download-ios_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/coin-master-cheats-2021_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/free-robux-link_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/huskybuckscom-free-robux_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/free-roblox-hack_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/tiktok-free-online_GM835599320.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/how-to-get-minecraft-java-edition-for-free_GM479516143.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/how-to-get-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/free-spins-for-coin-master-ios_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/coin-master-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/free-spins-coin-master-2021-no-verification_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/link-for-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/boost9-com-roblox-hack_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/coin-master-game-for-pc-free-download_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/dominus-roblox-free_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_off0000507d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x507D 27360 bytes
SHA-256: 4f778ad0ecbab11bf0a06da639b95095419df4b71c9a8af0302e227a60cbc112
font_01_sfnt_off00008d6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D6E 18460 bytes
SHA-256: 3db620dc27ebfa0759c6ed7151aa4176c3e0e2c8ac9c1127f796b2ca3233dbcc

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