Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ff3a0cafbff15d3…

MALICIOUS

PDF

42.2 KB Created: 2021-05-17 05:03:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 00a90307ac74bdac04c9b5019eae7127 SHA-1: 7609d6a0864165e5de61848f5d044b182b593a3c SHA-256: 4ff3a0cafbff15d3181e4a8b2ff75f7ee98106cd7bcef45ef3ef8d8753980f52
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 https://netcdn.xyz/app/406889139/coin-master-hack-ios-no-jailbreak-game-hack PDF link annotation
    • http://simon-skov-fougt.dk/billeder/coin-master-money-hack_GM406889139.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/coin-master-spin-hack-2021_GM406889139.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/free-robux-no-offers_GM431946152.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/minecraft-jar-free_GM479516143.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/coin-master-free-coins-link-2021_GM406889139.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/free-robux-images_GM431946152.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/coin-master-hack-app-2021_GM406889139.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/minecraft-java-hacks_GM479516143.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/coin-master-hack-app-download-free_GM406889139.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/roblox-no-download-hack_GM431946152.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/robux-free-gift-card_GM431946152.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/roblox-login-hack_GM431946152.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/coin-master-free-coins-2021_GM406889139.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/how-to-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/free-spins-coin-master-links-no-human-verification_GM406889139.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/free-spins-from-coin-master_GM406889139.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/coin-master-freebies_GM406889139.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_003_off000048bc.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48BC 25760 bytes
SHA-256: e20196b8b249646a9e718556a26e67578a61b29829a9af2b569c31a75d5e4a61
font_01_sfnt_off0000834c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x834C 18112 bytes
SHA-256: 0b3ca5face5facb5c3ab82e5b9d367123ba9b47c1b773fe7253bb83fe1962477

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