Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9d14158cbbe2a28…

MALICIOUS

PDF

33.1 KB Created: 2021-06-30 11:34:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 5464cf6c4d809f7e1825be807bb0c1a0 SHA-1: 1dc0bea1aa4c12386fccf8f16b3e2d531179976b SHA-256: f9d14158cbbe2a289a4180320e114b24e314336c8c5f97cee7bc52e441927acb
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/free-robux-gratuitement-game-hack PDF link annotation
    • http://library.fk.upnvj.ac.id/repository/roblox-jailbreak-telport-hack_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/free-robux-adopt-me_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/free-robux-no-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/roblox-goradiel-rpg-4-hacked_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/get-a-free-dominus-roblox_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/how-to-hack-coin-master-apple_GM406889139.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/free-roblox-money-2021_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/free-robux-gift-card-codes-2021-november_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/how-to-get-free-robux-no-bc_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/hacks-in-thessaloniki-international-airport-roblox-air-attica_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/roblox-medieval-warfare-reforged-how-to-hack_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/fre-robuxe_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/hack-roblox-pro_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/hack-granny-roblox-v3rmillion_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/free-roblox-toy-codes-2021_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/free-robux-no-verification-2021-android_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/roblox-robux-2021-free_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/cheat-aimbot-roblox-mdiafire_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/hacker-web-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/free-candy-decal-roblox_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_off00002fe8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FE8 20488 bytes
SHA-256: 8e7eac087f202fc38aef4491273e37f62d11551b8ceb0870c2ebf988da562161
font_01_sfnt_off00005bbb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BBB 19200 bytes
SHA-256: 5c0887f881e8ee0d421cb860ab8ff1134bc7e3fa45333e30e871513be1dc04cf

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