Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca12094955acf818…

MALICIOUS

PDF

44.0 KB Created: 2021-05-19 11:14:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 0c31060537637c26d36380e790a2396b SHA-1: 21813f06e8c4800f7a731b3056e8276af0f855fe SHA-256: ca12094955acf818551cd895144f1ac284e7cfb14d3669c8413bd4f3fa50cb44
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 0.9969

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/431946152/fast-robux-online-game-hack PDF link annotation
    • http://guimaq.com.br/images/how-to-get-free-robux-easy-on-phone_GM431946152.pdfIn PDF document text
    • http://guimaq.com.br/images/rbl-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://guimaq.com.br/images/free-robux-apk_GM431946152.pdfIn PDF document text
    • http://guimaq.com.br/images/free-robux-app-2021_GM431946152.pdfIn PDF document text
    • http://guimaq.com.br/images/get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://guimaq.com.br/images/como-hackear-coin-master-2021-espaol_GM406889139.pdfIn PDF document text
    • http://guimaq.com.br/images/legit-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://guimaq.com.br/images/coin-master-hack-without-verification-code_GM406889139.pdfIn PDF document text
    • http://guimaq.com.br/images/roblox-password-hacker_GM431946152.pdfIn PDF document text
    • http://guimaq.com.br/images/coin-master-free-coins-link_GM406889139.pdfIn PDF document text
    • http://guimaq.com.br/images/free-robux-no-human-verification-and-no-survey_GM431946152.pdfIn PDF document text
    • http://guimaq.com.br/images/como-conseguir-monedas-infinitas-y-tiradas-de-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://guimaq.com.br/images/100-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://guimaq.com.br/images/rape-simulator_GM431946152.pdfIn PDF document text
    • http://guimaq.com.br/images/free-robux-please_GM431946152.pdfIn PDF document text
    • http://guimaq.com.br/images/coin-master-free-spins-link-2021-no-verification-deutsch_GM406889139.pdfIn PDF document text
    • http://guimaq.com.br/images/coin-master-daily_GM406889139.pdfIn PDF document text
    • http://guimaq.com.br/images/what-is-a-robux_GM431946152.pdfIn PDF document text
    • http://guimaq.com.br/images/how-to-get-free-robux-without-verification-or-surveys_GM431946152.pdfIn PDF document text
    • http://guimaq.com.br/images/free-minecraft-skins-java_GM479516143.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_off00004963.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4963 28108 bytes
SHA-256: 4350da9e0e2c18a9a9709be8fa6a9c9a4e31456a1be38cab5519e17f7acecc9f
font_01_sfnt_off000088ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88EF 18540 bytes
SHA-256: 1ce2992fe372cb09a760e7271bfb3bc63a34ef997ce7bda10ccffc412ef7bb35

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