Malicious PDF — malware analysis report

Static analysis result for SHA-256 e990ccd6b7c613ad…

MALICIOUS

PDF

42.4 KB Created: 2021-05-19 03:09:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 4720b24e2de0217f85f54b73d764ce09 SHA-1: d3124908c1e3672fbd2ab8026b2d54b6ea68f2fb SHA-256: e990ccd6b7c613adb17a8767db083786801722373a803aa39cb6e96654a9e413
90 Risk Score

Malware Insights

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

This PDF contains embedded JavaScript and external URIs that link to game hack generators, indicating a lure to download potentially malicious content. The ML classifier strongly flagged this PDF as malicious, and the presence of a download button lure reinforces the malicious intent. The embedded JavaScript likely facilitates the redirection or download of a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 5

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://netcdn.xyz/app/1094591345/pokemon-go-free-remote-raid-pass-game-hack PDF link annotation
    • https://cheryco.ir/assets/public/js/uploading/files/cool-minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://cheryco.ir/assets/public/js/uploading/files/coin-master-hack-ios-download_GM406889139.pdfIn PDF document text
    • https://cheryco.ir/assets/public/js/uploading/files/coin-master-apk_GM406889139.pdfIn PDF document text
    • https://cheryco.ir/assets/public/js/uploading/files/how-to-get-free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • https://cheryco.ir/assets/public/js/uploading/files/how-to-get-free-robux-on-phone_GM431946152.pdfIn PDF document text
    • https://cheryco.ir/assets/public/js/uploading/files/how-do-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://cheryco.ir/assets/public/js/uploading/files/coin-master-free-spins-11-01-2021_GM406889139.pdfIn PDF document text
    • https://cheryco.ir/assets/public/js/uploading/files/free-coin-master-spins-for-today_GM406889139.pdfIn PDF document text
    • https://cheryco.ir/assets/public/js/uploading/files/how-do-you-get-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://cheryco.ir/assets/public/js/uploading/files/free-minecraft-java-code_GM479516143.pdfIn PDF document text
    • https://cheryco.ir/assets/public/js/uploading/files/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • https://cheryco.ir/assets/public/js/uploading/files/how-to-hack-robux_GM431946152.pdfIn PDF document text
    • https://cheryco.ir/assets/public/js/uploading/files/is-coin-master-hacks-safe_GM406889139.pdfIn PDF document text
    • https://cheryco.ir/assets/public/js/uploading/files/free-roblox-accounts-with-builders-club_GM431946152.pdfIn PDF document text
    • https://cheryco.ir/assets/public/js/uploading/files/coin-master-hack-without-verification-code_GM406889139.pdfIn PDF document text
    • https://cheryco.ir/assets/public/js/uploading/files/coin-master-hack-mod-apk-35-8_GM406889139.pdfIn PDF document text
    • https://cheryco.ir/assets/public/js/uploading/files/real-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://cheryco.ir/assets/public/js/uploading/files/how-to-get-unlimited-robux-2021_GM431946152.pdfIn PDF document text
    • https://cheryco.ir/assets/public/js/uploading/files/win-free-robux_GM431946152.pdfIn PDF document text
    • https://cheryco.ir/assets/public/js/uploading/files/roblox-adopt-me-free-pets_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004af7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AF7 24680 bytes
SHA-256: e7906a4e8c66910fe12d8010fc6f3b47e76c9724b83dbc3a32a2858c10dc8b85
font_01_sfnt_off000082e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82E5 18468 bytes
SHA-256: 59f53808d4d37bb6296b39baf72028f751565fcb7ad09d9244b5b394b5baa7d2

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