Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ee2dc04ae9e2e3f…

MALICIOUS

PDF

47.2 KB Created: 2021-06-04 02:55:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 657b6abe9e1160530d54b79cd3bcbefc SHA-1: 491aa60f8bfe34d8261c60ac81cdb34321c09bd5 SHA-256: 8ee2dc04ae9e2e3fe473c6b5632e56d03c91e04fff6c0e44c45ed4734f3ae048
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple heuristics indicating it links to malicious redirectors, specifically advertising a 'game hack'. The primary URL identified, https://netcdn.online/app/431946152/how-do-you-hack-roblox-game-hack, is associated with this lure. While no scripts were directly extracted, the PDF structure and embedded links strongly suggest a social engineering tactic to drive users to potentially malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

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/how-do-you-hack-roblox-game-hack In PDF document text
    • http://pustaka.fateta.unand.ac.id/repository/coin-master-hack-mod-apk-free-download_GM406889139.pdfIn PDF document text
    • http://pustaka.fateta.unand.ac.id/repository/free-robux-with-no-verification_GM431946152.pdfIn PDF document text
    • http://pustaka.fateta.unand.ac.id/repository/coin-master-attack-madness-hack_GM406889139.pdfIn PDF document text
    • http://pustaka.fateta.unand.ac.id/repository/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • http://pustaka.fateta.unand.ac.id/repository/www-rbx-com_GM431946152.pdfIn PDF document text
    • http://pustaka.fateta.unand.ac.id/repository/free-minecraft-java-account_GM479516143.pdfIn PDF document text
    • http://pustaka.fateta.unand.ac.id/repository/minecraft-education-free_GM479516143.pdfIn PDF document text
    • http://pustaka.fateta.unand.ac.id/repository/easy-points-gg_GM431946152.pdfIn PDF document text
    • http://pustaka.fateta.unand.ac.id/repository/minecraft-survival-free_GM479516143.pdfIn PDF document text
    • http://pustaka.fateta.unand.ac.id/repository/https-rbx-place-rewards_GM431946152.pdfIn PDF document text
    • http://pustaka.fateta.unand.ac.id/repository/robux-gift-card-free_GM431946152.pdfIn PDF document text
    • http://pustaka.fateta.unand.ac.id/repository/minecraft-hacks-for-2b2t_GM479516143.pdfIn PDF document text
    • http://pustaka.fateta.unand.ac.id/repository/how-to-get-roebucks-on-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.fateta.unand.ac.id/repository/pubg-uc-usa_GM1330123889.pdfIn PDF document text
    • http://pustaka.fateta.unand.ac.id/repository/roblox-sexually-abused_GM431946152.pdfIn PDF document text
    • http://pustaka.fateta.unand.ac.id/repository/sites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.fateta.unand.ac.id/repository/how-do-u-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.fateta.unand.ac.id/repository/roblox-download-pc-free_GM431946152.pdfIn PDF document text
    • http://pustaka.fateta.unand.ac.id/repository/coin-master-working-hack_GM406889139.pdfIn PDF document text
    • http://pustaka.fateta.unand.ac.id/repository/how-to-hack-minecraft_GM479516143.pdfIn PDF document text
    • http://wolfzscriptsIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004fa4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4FA4 25648 bytes
SHA-256: b4ec4266f1bc251b65666c08f7f1843ca37d4a08897a8fa17c53e5eecb3056db
font_01_sfnt_off00008a59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A59 2832 bytes
SHA-256: 78e89c8f621d90011ffb7a2107d701d4cdf090a2f2cf42d5a65297289afc8805
font_02_sfnt_off0000940a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x940A 18816 bytes
SHA-256: d27b94fe1a8c05d6feb56d9a091a96145976f0feb7173cb46f16c8470fe3a7d8

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