Malicious PDF — malware analysis report

Static analysis result for SHA-256 f94185ab2d8310b4…

MALICIOUS

PDF

34.7 KB Created: 2021-07-05 08:50:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 5b7ef0b47c510d30d7f0e8e34fccf1cf SHA-1: aafc4f01d9dd3ae94b933387657a07b530fe99b0 SHA-256: f94185ab2d8310b42539d3b55e5944cb956e5efd4db259067ccf2b1d854d4e35
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains a lure for 'free game hacks' and directs users to a suspicious URL. The ML classifier strongly flagged this PDF as malicious, and the embedded link likely leads to a scam or a second-stage payload. No scripts were extracted, but the PDF structure and embedded URI suggest an attempt to exploit user interest in game cheats to deliver malicious content.

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.tw/app/406889139/free-coin-master-coins-game-hack PDF link annotation
    • https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/free-robux-hack-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/legit-coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/athena-roblox-hack_GM431946152.pdfIn PDF document text
    • https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/free-robux-gen_GM431946152.pdfIn PDF document text
    • https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/coin-master-heaven-free-spins_GM406889139.pdfIn PDF document text
    • https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/is-the-roblox-cheat-detection-good_GM431946152.pdfIn PDF document text
    • https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/how-to-get-free-spins-on-coin-master-without-verification_GM406889139.pdfIn PDF document text
    • https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/coin-master-hack-apk-2021-ios_GM406889139.pdfIn PDF document text
    • https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/coin-master-2021-free-spins-link-today_GM406889139.pdfIn PDF document text
    • https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/how-to-get-free-robux-no-scams-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/coin-master-daily-spin-link_GM406889139.pdfIn PDF document text
    • https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/free-coins-and-spins-link-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/how-to-watch-ads-for-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/howe-to-get-robux-for-free_GM431946152.pdfIn PDF document text
    • https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/fbchampion_GM406889139.pdfIn PDF document text
    • https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/free-robux-pins-for-sale_GM431946152.pdfIn PDF document text
    • https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/free-coin-master-spins-for-today_GM406889139.pdfIn PDF document text
    • https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/how-to-script-hack-on-roblox-lumber-tycoon-2-money_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
stream_002_off000032d8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x32D8 22732 bytes
SHA-256: 9af695042c63a0c7d589d4c46a16e54b3b55c64daba6f2b7f487d8848738d5bd
font_01_sfnt_off00006604.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6604 17996 bytes
SHA-256: e3fb1ca426c01543f38f1d1129ae452bef28a40365fbe99abf1b239340e30419

Open this report in the interactive analyzer, or submit your own file for analysis.