Malicious PDF — malware analysis report

Static analysis result for SHA-256 9cf5d8ac7a03f977…

MALICIOUS

PDF

35.0 KB Created: 2021-06-27 23:24:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-12
MD5: c5f2613a800408fb49cd4ef13d4a476d SHA-1: 19428722114994795258edaaaa1655b96edba446 SHA-256: 9cf5d8ac7a03f977cc33129d5d6cbf3475f1786a4541774dd4249dcb99860295
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document contains multiple links to known malicious redirectors and lures users with 'game hack' content. The primary link, http://netcdn.co/app/431946152/how-to-fly-roblox-with-cheat-engine-game-hack, is identified as a malicious redirector. The document's structure and embedded URLs suggest an attempt to trick the user into downloading a malicious payload, likely exploiting a client execution vulnerability.

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/how-to-fly-roblox-with-cheat-engine-game-hack In PDF document text
    • http://lib.stimykpn.ac.id/repository/free-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/robux-codes-free-2021_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/impact-minecraft-hack_GM479516143.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/coin-master-400-spin-link_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/synapse-x-roblox-free-download-2021_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-the-labyrinth-hack-pastebin_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/easy-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/speed-hack-download-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-jailbreak-hack-keycard_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-roblox-jailbreak-money-hack_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/free-robux-ad_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/how-to-get-no-cooldown-hacks-in-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/bloxburg-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-roblox-gfx-maker_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/freer-pro-tiktok-fans_GM835599320.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/give-me-free-robux-for-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/coin-master-hack-spins-game-download_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/minecraft-java-account-free_GM479516143.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/coin-master-links-for-today_GM406889139.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_off00003052.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3052 22428 bytes
SHA-256: 83ba4079fddad213d8113e845ae8ab74337d56deacd7d5d7fc627b7d6890e3b2
font_01_sfnt_off00006210.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6210 19584 bytes
SHA-256: 59e2cf5fd9cbe663a91375ff10a1629a8b986bce976a502734abb4dd2ae45483

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