Malicious PDF — malware analysis report

Static analysis result for SHA-256 5406b8e63bd2fc8e…

MALICIOUS

PDF

34.6 KB Created: 2021-06-30 16:52:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 6036fcc2cc13a16c9cf90b49895c19a2 SHA-1: d9f30b4c4b8f2234831f9f108b0984e82ac4fb7a SHA-256: 5406b8e63bd2fc8e6f3ee215fd4423c8e2d2a38f2872d7e2ef73bfba0ded07d6
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links and text that lure the user to click on a URL, likely to download a second-stage payload. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' indicates that the primary URL redirects to known malicious infrastructure. The document body and extracted URLs suggest a theme of game hacks and cheats for platforms like Roblox and Coin Master, indicating a social engineering pretext for malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 3

  • 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/roblox.game-hack.online-verification-problem-game-hack In PDF document text
    • http://digilib.stie-yppi.ac.id/repository/free-robux-script-2021_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/robux-hack-proven_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/coin-master-spins_GM406889139.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/how-can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/best-free-robux-sites_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/free-dominus-in-roblox-catalog_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/spin-link-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/corrupt-free-roblox-torso_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/daily-coin-master-free_GM406889139.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/free-roblox-redeem-codes-11-2-16_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/coin-master-free-spins-app_GM406889139.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/roblox-lumber-tycoon-2-hack-script_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/ping-booster-free-download-for-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/hack-tycoon-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/free-printable-minecraft-coloring-pages_GM479516143.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/hack-para-jailbreak-roblox-2021_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/roblox-skywars-mega-vip-hack_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/cheat-roblox-pour-passer-des-niveaux-sur-mega-fun-obby_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/best-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/roblox-hacked-version_GM431946152.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_off00002fa8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FA8 22056 bytes
SHA-256: 2f2bb70082271dff95a5dc2578ed5cba68549e3c261aa08927770f805ff054d6
font_01_sfnt_off00006094.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6094 19696 bytes
SHA-256: 97d128ab29edebc34176c1c6ccb1feeb5b39c7db3b6302bd305a84b94097affc

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