Malicious PDF — malware analysis report

Static analysis result for SHA-256 c116c4d605c0d6c8…

MALICIOUS

PDF

32.9 KB Created: 2021-06-18 00:42:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: e2009d5254c421ea387c10194cae51e2 SHA-1: c84286a95e3a1918fd023b851fac9f94afead28e SHA-256: c116c4d605c0d6c898209c06affc469e2b9bbe8e3860d91bebe31351818af0c2
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 0.9980

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.co/app/431946152/free-red-scarf-roblox-game-hack PDF link annotation
    • http://klinkeridee.de/images/best-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://klinkeridee.de/images/free-robux-no-survey-or-human-verification_GM431946152.pdfIn PDF document text
    • http://klinkeridee.de/images/all-codes-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://klinkeridee.de/images/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://klinkeridee.de/images/minecraft-free-school_GM479516143.pdfIn PDF document text
    • http://klinkeridee.de/images/free-daily-spin-coin-master-game_GM406889139.pdfIn PDF document text
    • http://klinkeridee.de/images/free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://klinkeridee.de/images/can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://klinkeridee.de/images/roblox-robux-generator_GM431946152.pdfIn PDF document text
    • http://klinkeridee.de/images/free-robux-codes-no-verification_GM431946152.pdfIn PDF document text
    • http://klinkeridee.de/images/minecraft-linux-free_GM479516143.pdfIn PDF document text
    • http://klinkeridee.de/images/how-to-get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://klinkeridee.de/images/is-minecraft-free-on-xbox-one_GM479516143.pdfIn PDF document text
    • http://klinkeridee.de/images/free-robux-apk_GM431946152.pdfIn PDF document text
    • http://klinkeridee.de/images/how-to-get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://klinkeridee.de/images/how-to-get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://klinkeridee.de/images/how-to-get-hacks-on-minecraft_GM479516143.pdfIn PDF document text
    • http://klinkeridee.de/images/how-to-get-free-pets-in-adopt-me-roblox_GM431946152.pdfIn PDF document text
    • http://klinkeridee.de/images/free-robux-hack-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://klinkeridee.de/images/coin-master-spin-link-free-download_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
font_00_sfnt_off00002cfd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2CFD 21608 bytes
SHA-256: fc96551e9f4d8bd6273cc520757c64090e7c987b44111f2ab8276188279dcd7c
font_01_sfnt_off00005c7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C7E 18640 bytes
SHA-256: ee772cb83b64e5af1023cb1d9522d7bc1b5c3a078561d23336ebc6f92e863ecc

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