Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f4eeebd15d4f0a6…

MALICIOUS

PDF

35.9 KB Created: 2021-06-28 05:39:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 52962f1163d663692661b1b4c3142b6b SHA-1: 9eb5568c655a2e92493bb3661f29e658ff4fc7f6 SHA-256: 7f4eeebd15d4f0a673ea167d076d00fa31c3e0f6c8b25b1414ea33dcb52597d0
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to external websites, including a known malicious redirector, under the guise of game hacks and generators. The document body and heuristics indicate a lure to download or access potentially harmful content. While no scripts were explicitly extracted, the nature of the links suggests a potential for further malicious activity, such as downloading a second-stage payload.

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/what-roblox-hack-works-game-hack In PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/multiplayer-master-hack-coins_GM406889139.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/quick-robux-hacks_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/earn-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/comment-hacker-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/how-to-sue-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/coin-master-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/hack-to-protect-village-on-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/coin-master-free-spins-link-download-for-iphone_GM406889139.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/free-robux-giveaway_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/https-oprewards-com-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/1x1x1x1-roblox-id_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/free-robux-human-verification_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/free-games-roblox-free-online_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/how-to-hack-and-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/free-robux-app-real_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/coin-master-hacks-for-free-spins_GM406889139.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/how-to-get-free-hacks-for-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/how-to-hacka-roblox-account_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/coin-master-village-3_GM406889139.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/free-coin-master-spins-for-today_GM406889139.pdfIn PDF document text
    • https://www.roblox.com/.IIn 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_off00003406.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3406 22752 bytes
SHA-256: f742d7fb44b6bb15a8225aeea5a631245e11741cf925133dbd9be28ec3f972b5
font_01_sfnt_off00006701.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6701 19124 bytes
SHA-256: b3a534a7511253a2e59301fc58ce71c22651e92068a63de05deb04e75a63009c

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