Malicious PDF — malware analysis report

Static analysis result for SHA-256 302a4a63308aa369…

MALICIOUS

PDF

50.8 KB Created: 2021-06-03 20:01:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 042bba78c46204b300c057009b39837f SHA-1: 0e1a8cbf85ad777a96964e638f413a060377ce98 SHA-256: 302a4a63308aa36960f1b4abc0df0797cb48013463ee0a7477e586521b9ddb4b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting "free generator / game hack" lures. The ML classifier also flagged this PDF as malicious. While no scripts were extracted, the embedded URLs and the nature of the lures strongly indicate a phishing or scam attempt designed to lead users to potentially harmful content or further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9713

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/406889139/100-free-spins-coin-master-game-hack In PDF document text
    • http://perpustakaan.baytalhikmah.sch.id/repository/how-to-play-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • http://www.perpustakaan.baytalhikmah.sch.id//repository/minecraft-beta-free_GM479516143.pdfIn PDF document text
    • http://www.perpustakaan.baytalhikmah.sch.id/repository/free-robux-youtube_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.baytalhikmah.sch.id/repository/how-long-is-the-minecraft-free-trial_GM479516143.pdfIn PDF document text
    • http://www.perpustakaan.baytalhikmah.sch.id//repository/coin-master-free-gift-links-2021_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.baytalhikmah.sch.id/repository/get-free-roblox_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.baytalhikmah.sch.id//repository/today-coin-master-free-coins-link_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.baytalhikmah.sch.id//repository/redeem-roblox-card-free_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.baytalhikmah.sch.id//repository/free-robux-website_GM431946152.pdfIn PDF document text
    • http://perpustakaan.baytalhikmah.sch.id/repository/earn-free-robux-for-roblox_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.baytalhikmah.sch.id/repository/free-spin-online-tool-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.baytalhikmah.sch.id/repository/get-free-food-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.baytalhikmah.sch.id//repository/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.baytalhikmah.sch.id/repository/coin-master-daily-bonus_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.baytalhikmah.sch.id/repository/free-robux-generator-2021-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.baytalhikmah.sch.id/repository/how-to-get-free-stuff-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.baytalhikmah.sch.id//repository/free-money-links-coin-master_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.baytalhikmah.sch.id/repository/hacks-minecraft_GM479516143.pdfIn PDF document text
    • http://www.perpustakaan.baytalhikmah.sch.id//repository/free-spin-coin-master-online_GM406889139.pdfIn PDF document text
    • http://perpustakaan.baytalhikmah.sch.id/repository/coin-master-hack-app-download-free_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000050e5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50E5 25504 bytes
SHA-256: 503b5b6d08e9479a6ba6c44caddd58abf02c7c4bc11796e1fbf133abc786b038
font_01_sfnt_off00008c43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C43 4076 bytes
SHA-256: e2c79843361ef33e291c1eb6cf5b3865de456d5c7a582e5b198e8fe003004e96
font_02_sfnt_off00009a0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A0C 2788 bytes
SHA-256: 6fd7c7f447d66842f81aa8cf197935b17f22157d0c7e9f95622df1b5b4ddf530
font_03_sfnt_off0000a3fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA3FC 18164 bytes
SHA-256: 9bc61af2acbda784231945e40c4a4bb5d6810b0d04641be6b37b2cdd3c5b78bc

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