Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e92f7869d7a23d4…

MALICIOUS

PDF

35.9 KB Created: 2021-07-05 03:29:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-11
MD5: c02db4d42161eda4784f1897d5c9f23e SHA-1: 41d77d99de9bbd9250113333d124e47f70d39519 SHA-256: 9e92f7869d7a23d44476265edf4e49145d3d372f665f76033855bd7ad39e9d29
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links that redirect to known malicious infrastructure, specifically advertising game hacks and generators. The ML classifier also flagged this PDF with high confidence. The document body contains obfuscated text and URLs, suggesting an attempt to disguise the malicious intent of leading users to potentially harmful websites.

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.tw/app/431946152/robuxglobalcom-no-verification-game-hack In PDF document text
    • http://pustaka.minangkabau.unand.ac.id/repository/free-spins-and-coins-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://pustaka.minangkabau.unand.ac.id/repository/coin-master-free-coins-2021_GM406889139.pdfIn PDF document text
    • http://pustaka.minangkabau.unand.ac.id/repository/moonactive-free-spins-link_GM406889139.pdfIn PDF document text
    • http://pustaka.minangkabau.unand.ac.id/repository/a-code-froom-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.minangkabau.unand.ac.id/repository/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.minangkabau.unand.ac.id/repository/hacks-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.minangkabau.unand.ac.id/repository/daily-coin-master-free_GM406889139.pdfIn PDF document text
    • http://pustaka.minangkabau.unand.ac.id/repository/minecraft_GM479516143.pdfIn PDF document text
    • http://pustaka.minangkabau.unand.ac.id/repository/deep-ocean-hack-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.minangkabau.unand.ac.id/repository/robux-com-free_GM431946152.pdfIn PDF document text
    • http://pustaka.minangkabau.unand.ac.id/repository/roblox-noclip-hack-wearedevs_GM431946152.pdfIn PDF document text
    • http://pustaka.minangkabau.unand.ac.id/repository/hack-coin-master-using-pc_GM406889139.pdfIn PDF document text
    • http://pustaka.minangkabau.unand.ac.id/repository/roblox-accounts-for-sale-free_GM431946152.pdfIn PDF document text
    • http://pustaka.minangkabau.unand.ac.id/repository/where-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.minangkabau.unand.ac.id/repository/how-to-get-free-skins-in-minecraft_GM479516143.pdfIn PDF document text
    • http://pustaka.minangkabau.unand.ac.id/repository/how-to-use-cheat-engine-on-roblox-2021-67_GM431946152.pdfIn PDF document text
    • http://pustaka.minangkabau.unand.ac.id/repository/roblox-ninja-legends-hack-script_GM431946152.pdfIn PDF document text
    • http://pustaka.minangkabau.unand.ac.id/repository/roblox-hacked-version-download_GM431946152.pdfIn PDF document text
    • http://pustaka.minangkabau.unand.ac.id/repository/coin-master-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://pustaka.minangkabau.unand.ac.id/repository/free-minecraft-capes-no-mods_GM479516143.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_off00003469.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3469 22516 bytes
SHA-256: 84e9a54e992abd33986693f1b243502b1d5938641b8801e241aeca68f7453c27
font_01_sfnt_off000066d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66D3 19244 bytes
SHA-256: 6b63eb57ff7f0570f867c922be0f3fd595e847af2b11a53457756d615b7e0fbe

Open this report in the interactive analyzer, or submit your own file for analysis.