Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd862cb4fa41984c…

MALICIOUS

PDF

42.2 KB Created: 2021-05-19 14:26:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: bd223d640c982bcfe6995ac650419ae3 SHA-1: 2538f77a48bc269b995e3faccd2c6b2f31199100 SHA-256: cd862cb4fa41984c89f8bc57b4463df49a8119a1616518a7ac786905dc1ddeaf
122 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by an ML classifier. It uses brand-impersonation credential phishing. 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 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.
  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://netcdn.xyz/app/406889139/free-spins-coin-master-without-survey-game-hack.
  • 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/free-spins-coin-master-without-survey-game-hack PDF link annotation
    • http://lawpatron.ru/images/easy-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lawpatron.ru/images/free-robux-no-anti-bot-verification_GM431946152.pdfIn PDF document text
    • http://lawpatron.ru/images/roblox-hack-ios_GM431946152.pdfIn PDF document text
    • http://lawpatron.ru/images/how-to-hack-into-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://lawpatron.ru/images/free-card-collection-in-coin-master_GM406889139.pdfIn PDF document text
    • http://lawpatron.ru/images/free-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • http://lawpatron.ru/images/80-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://lawpatron.ru/images/free-100-robux_GM431946152.pdfIn PDF document text
    • http://lawpatron.ru/images/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • http://lawpatron.ru/images/earn-robux-today_GM431946152.pdfIn PDF document text
    • http://lawpatron.ru/images/how-to-get-free-mods-in-minecraft_GM479516143.pdfIn PDF document text
    • http://lawpatron.ru/images/without-pokemon-go-free-remote-raid-pass_GM1094591345.pdfIn PDF document text
    • http://lawpatron.ru/images/www-free-robux-com_GM431946152.pdfIn PDF document text
    • http://lawpatron.ru/images/best-free-roblox-outfits_GM431946152.pdfIn PDF document text
    • http://lawpatron.ru/images/coin-master-hack-spins-and-coins-unlimited-free_GM406889139.pdfIn PDF document text
    • http://lawpatron.ru/images/roblox-pink-free-robux_GM431946152.pdfIn PDF document text
    • http://lawpatron.ru/images/coin-master-400-spin-link-today_GM406889139.pdfIn PDF document text
    • http://lawpatron.ru/images/coin-master-hack-download-android_GM406889139.pdfIn PDF document text
    • http://lawpatron.ru/images/robux-generator-without-human-verification_GM431946152.pdfIn PDF document text
    • http://lawpatron.ru/images/roblox-download_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_off00004938.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4938 24560 bytes
SHA-256: 504974e8228200aa01aa125e34a2c97ead8233bc52b2ce102df44400b55f7e74
font_01_sfnt_off0000815e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x815E 18684 bytes
SHA-256: ad7fa04790fc34b76c8e1b16c403c61c32ceaee032d5a8afb0071baf0a254118

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