Malicious PDF — malware analysis report

Static analysis result for SHA-256 ddc2aed0b0c7a3ad…

MALICIOUS

PDF

34.3 KB Created: 2021-07-06 23:20:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 2742d5d3a1e9c3c1bceaabeaf400bb10 SHA-1: 3221cb30ed919b58d85ae103b7cf235621c8b00a SHA-256: ddc2aed0b0c7a3ad9e919943da97cda24fa2e2bafbb68462a093c50f43c5289e
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 0.9824

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.tw/app/431946152/free-robux-no-verification-no-download-2021-game-hack PDF link annotation
    • http://www.bdlh.go.th/ckfinder/userfiles/files/robux-game_GM431946152.pdfIn PDF document text
    • http://www.bdlh.go.th/ckfinder/userfiles/files/free-coins_GM406889139.pdfIn PDF document text
    • http://www.bdlh.go.th/ckfinder/userfiles/files/regex-roblox-jailbreak-hack_GM431946152.pdfIn PDF document text
    • http://www.bdlh.go.th/ckfinder/userfiles/files/village-3-coin-master_GM406889139.pdfIn PDF document text
    • http://www.bdlh.go.th/ckfinder/userfiles/files/how-to-get-free-robux-ultimate-gamer-365_GM431946152.pdfIn PDF document text
    • http://www.bdlh.go.th/ckfinder/userfiles/files/robux-sign_GM431946152.pdfIn PDF document text
    • http://www.bdlh.go.th/ckfinder/userfiles/files/download-coin-master-hack-mod-apk_GM406889139.pdfIn PDF document text
    • http://www.bdlh.go.th/ckfinder/userfiles/files/pokemon-go-free-incense_GM1094591345.pdfIn PDF document text
    • http://www.bdlh.go.th/ckfinder/userfiles/files/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
    • http://www.bdlh.go.th/ckfinder/userfiles/files/free-coin-master-spins-blog_GM406889139.pdfIn PDF document text
    • http://www.bdlh.go.th/ckfinder/userfiles/files/minecraft-complete-handbook_GM479516143.pdfIn PDF document text
    • http://www.bdlh.go.th/ckfinder/userfiles/files/how-to-give-people-robux-for-free-in-roblox_GM431946152.pdfIn PDF document text
    • http://www.bdlh.go.th/ckfinder/userfiles/files/working-hacks-for-roblox_GM431946152.pdfIn PDF document text
    • http://www.bdlh.go.th/ckfinder/userfiles/files/free-robux-no-download_GM431946152.pdfIn PDF document text
    • http://www.bdlh.go.th/ckfinder/userfiles/files/coin-master-hack-2021-apk-download_GM406889139.pdfIn PDF document text
    • http://www.bdlh.go.th/ckfinder/userfiles/files/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • http://www.bdlh.go.th/ckfinder/userfiles/files/hack-pour-roblox-apocalipse-rising_GM431946152.pdfIn PDF document text
    • http://www.bdlh.go.th/ckfinder/userfiles/files/coin-master-free-spins-2021-hack_GM406889139.pdfIn PDF document text
    • http://www.bdlh.go.th/ckfinder/userfiles/files/free-robux-codes-no-survey-no-download_GM431946152.pdfIn PDF document text
    • http://www.bdlh.go.th/ckfinder/userfiles/files/how-to-hack-free-robux_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_off00002b76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2B76 22564 bytes
SHA-256: 18b824f4f87d690984faa9c07274172eb3303051bb27134ea73f1aceea0934a2
font_01_sfnt_off00005e01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E01 20056 bytes
SHA-256: dce3349a9d9044df76718d11f8b674b72a03639a731a3e35bf809eb868dd5616

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