Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8b5e33388e9301e…

MALICIOUS

PDF

42.5 KB Created: 2021-06-13 19:53:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 3bbf6a25149af78bd28709d1662006c9 SHA-1: d06da7854ca5e78f117b5c299db63a757435e513 SHA-256: e8b5e33388e9301e3c71dae002b84c87b4db5cfee0eaf9f4c779b1a8e4b8012e
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 0.9971

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/roblox-free-items-exploit-game-hack PDF link annotation
    • http://opac.salatiga.go.id/slims7//repository/how-to-make-robux_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/hackear-juego-coin-master_GM406889139.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/final-stand-2-hacks-roblox_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/free-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/how-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/free-robux-codes-generator-no-verification_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/roblox-jailbreak-hack-download-speed_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/coin-master-free-coins-hack_GM406889139.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/roblox-is-being-hacked_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/roblox-zone-robux-hack_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/free-robux-sites-that-work_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/free-robux-no-survey_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/how-to-hack-coin-master-game-without-verification_GM406889139.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/roblox-hacks-2021_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/free-spin-coin-master-link-download_GM406889139.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/coin-master-in-app-purchase-hack_GM406889139.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/coin-master-free-spin-reward-links_GM406889139.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/huskybuckscom-free-robux_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/free-robux-script_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_off00004a53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A53 24616 bytes
SHA-256: b8b15c542a77232f52d37ba0529ea6f605c03774c57275ce9e83b1de814522e7
font_01_sfnt_off000082ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82BA 18608 bytes
SHA-256: 454b3dee6d3eed5130ccea48ee5954b4e5a2a1af7ce3bc4ac193db046a5c7ee3

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