Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e74f9d49f2e4c3e…

MALICIOUS

PDF

44.0 KB Created: 2021-04-24 01:18:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 98e5714c8983073218bef7b873dcd59d SHA-1: 269cd5720cbb0b43fd4d2c3f040a60dd23365458 SHA-256: 6e74f9d49f2e4c3e732258e12703d6eb2ccec599dbed43ee3b584b6af687e3fd
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 0.9868

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 https://netsecure.top/app/431946152/roblox-broken-bones-iv-cheats-game-hack PDF link annotation
    • http://kpu-klungkungkab.go.id/new/public/ckfinder/userfiles/files/how-to-cheat-on-roblox-with-mhs.pdfIn PDF document text
    • http://kpu-klungkungkab.go.id/new/public/ckfinder/userfiles/files/how-to-hack-roblox-accounts-2021-with-wireshark.pdfIn PDF document text
    • http://kpu-klungkungkab.go.id/new/public/ckfinder/userfiles/files/roblox-work-at-a-pizza-place-money-cheat.pdfIn PDF document text
    • http://kpu-klungkungkab.go.id/new/public/ckfinder/userfiles/files/how-do-you-get-free-robux-on-a-samsung.pdfIn PDF document text
    • http://kpu-klungkungkab.go.id/new/public/ckfinder/userfiles/files/roblox-how-to-make-a-slient-aim-hack.pdfIn PDF document text
    • http://kpu-klungkungkab.go.id/new/public/ckfinder/userfiles/files/hacks-on-roblox-app.pdfIn PDF document text
    • http://kpu-klungkungkab.go.id/new/public/ckfinder/userfiles/files/roblox-high-school-cheat-engine.pdfIn PDF document text
    • http://kpu-klungkungkab.go.id/new/public/ckfinder/userfiles/files/free-shirts-templates-non-copyrighted-roblox.pdfIn PDF document text
    • http://kpu-klungkungkab.go.id/new/public/ckfinder/userfiles/files/hacks-impulse-testing-roblox.pdfIn PDF document text
    • http://kpu-klungkungkab.go.id/new/public/ckfinder/userfiles/files/roblox-assassin-knives-hack.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000043ae.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x43AE 25976 bytes
SHA-256: d786f9fa32ca880cc5d91580047333f2ea8a40e3e593c43c9cfc13194cacfc10
font_01_sfnt_off00007dce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DCE 3312 bytes
SHA-256: 40bd8eebcb3a0d68a8646f1930e84f30a44bfa48525263c6c528f0bc1e9c1677
font_02_sfnt_off0000891d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x891D 18564 bytes
SHA-256: 5af078ef3e28f00bcc00aeb65ba3f01aea854b7c574b65391d1c9ead30df9682

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