Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb555993695324fa…

MALICIOUS

PDF

35.2 KB Created: 2021-06-19 23:07:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: fc5e017327a37c33d98aa83b4f79b913 SHA-1: 14c48a00828e059eeccd990e249ef004aa2e716f SHA-256: eb555993695324faba2daea70bc790fd06e32293f936ea57e4b558ec99ad5f92
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-copy-and-paste-2021-game-hack PDF link annotation
    • https://www.elearningmtsn1tanggamus.sch.id/__statics/gudangsoal/files/roblox-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://www.elearningmtsn1tanggamus.sch.id/__statics/gudangsoal/files/free-robux-websites-that-work_GM431946152.pdfIn PDF document text
    • https://elearningmtsn1tanggamus.sch.id/__statics/gudangsoal/files/minecraft-hack-client-18-9_GM479516143.pdfIn PDF document text
    • https://www.elearningmtsn1tanggamus.sch.id/__statics/gudangsoal/files/free-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • https://www.elearningmtsn1tanggamus.sch.id/__statics/gudangsoal/files/roblox-hack-apk_GM431946152.pdfIn PDF document text
    • https://elearningmtsn1tanggamus.sch.id/__statics/gudangsoal/files/coin-master-coins-hack_GM406889139.pdfIn PDF document text
    • https://elearningmtsn1tanggamus.sch.id/__statics/gudangsoal/files/free-robux-roblox-promo-codes_GM431946152.pdfIn PDF document text
    • https://elearningmtsn1tanggamus.sch.id/__statics/gudangsoal/files/tiktok-free-hong-kong_GM835599320.pdfIn PDF document text
    • https://elearningmtsn1tanggamus.sch.id/__statics/gudangsoal/files/freerobuxhack-us_GM431946152.pdfIn PDF document text
    • https://www.elearningmtsn1tanggamus.sch.id/__statics/gudangsoal/files/client-hack-roblox_GM431946152.pdfIn PDF document text
    • https://www.elearningmtsn1tanggamus.sch.id/__statics/gudangsoal/files/free-robux-com-roblox_GM431946152.pdfIn PDF document text
    • https://www.elearningmtsn1tanggamus.sch.id/__statics/gudangsoal/files/free-vip-roblox_GM431946152.pdfIn PDF document text
    • https://www.elearningmtsn1tanggamus.sch.id/__statics/gudangsoal/files/get-free-robux-info_GM431946152.pdfIn PDF document text
    • https://elearningmtsn1tanggamus.sch.id/__statics/gudangsoal/files/free-spin-link-for-coin-master-game_GM406889139.pdfIn PDF document text
    • https://www.elearningmtsn1tanggamus.sch.id/__statics/gudangsoal/files/how-to-get-free-coins-in-coin-master-game_GM406889139.pdfIn PDF document text
    • https://elearningmtsn1tanggamus.sch.id/__statics/gudangsoal/files/free-robux-hack_GM431946152.pdfIn PDF document text
    • https://www.elearningmtsn1tanggamus.sch.id/__statics/gudangsoal/files/how-to-hack-coin-master-computer_GM406889139.pdfIn PDF document text
    • https://www.elearningmtsn1tanggamus.sch.id/__statics/gudangsoal/files/coin-master-facebook-page_GM406889139.pdfIn PDF document text
    • https://elearningmtsn1tanggamus.sch.id/__statics/gudangsoal/files/minecraft-free-play-no-download_GM479516143.pdfIn PDF document text
    • https://www.elearningmtsn1tanggamus.sch.id/__statics/gudangsoal/files/robux-in_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_off0000304b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x304B 22384 bytes
SHA-256: c972291357839f36fc993c17a24cb1cd85a94bc339e1f82aa3a0d3404a0aabc2
font_01_sfnt_off000061bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61BF 19908 bytes
SHA-256: 1146e87493890b7e826f775e68717cd5d505cf18d4cd1ef731a91c72086506ba

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