Malicious PDF — malware analysis report

Static analysis result for SHA-256 d906666564f418af…

MALICIOUS

PDF

42.2 KB Created: 2021-05-14 16:31:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: eb975f7d051bf3256aa918d67be3e566 SHA-1: dacfd32bfdc47cd1a651da80adc6230c56403263 SHA-256: d906666564f418afea7e08b06281bb392bd33ba544e680d183c4be5daf445f8b
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

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-coins-free-game-hack PDF link annotation
    • https://www.only-press.ru/images/coin-master-hacks-for-cards_GM406889139.pdfIn PDF document text
    • https://www.only-press.ru/images/how-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.only-press.ru/images/coin-master-spin-ml_GM406889139.pdfIn PDF document text
    • https://www.only-press.ru/images/free-800-robux_GM431946152.pdfIn PDF document text
    • https://www.only-press.ru/images/minecraft-bedrock-edition-pc-download-free_GM479516143.pdfIn PDF document text
    • https://www.only-press.ru/images/roblox-adopt-me-free-pets_GM431946152.pdfIn PDF document text
    • https://www.only-press.ru/images/cm-free-spins_GM406889139.pdfIn PDF document text
    • https://www.only-press.ru/images/how-to-hack-roblox-to-get-robux_GM431946152.pdfIn PDF document text
    • https://www.only-press.ru/images/coin-master-free-spins-and-coins-daily_GM406889139.pdfIn PDF document text
    • https://www.only-press.ru/images/spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.only-press.ru/images/robuxy-com-generator_GM431946152.pdfIn PDF document text
    • https://www.only-press.ru/images/sites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.only-press.ru/images/robuxy-com-free-robux_GM431946152.pdfIn PDF document text
    • https://www.only-press.ru/images/free-robux-quiz_GM431946152.pdfIn PDF document text
    • https://www.only-press.ru/images/no-verification-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://www.only-press.ru/images/coin-master-links-to-get-free-spins_GM406889139.pdfIn PDF document text
    • https://www.only-press.ru/images/coin-master-500-free-spins_GM406889139.pdfIn PDF document text
    • https://www.only-press.ru/images/buy-robux-free_GM431946152.pdfIn PDF document text
    • https://www.only-press.ru/images/robux-generator-without-human-verification_GM431946152.pdfIn PDF document text
    • https://www.only-press.ru/images/is-there-any-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.urcouponsdeal.com/2019/03/coin-master-free-spin-and-coin-links.htmlIn 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_off00004adc.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4ADC 26088 bytes
SHA-256: 2e2d1b8317f791269b1483076b756d28a6f17b5c77c36314043b16b6ff89c4c7
font_01_sfnt_off00008443.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8443 17712 bytes
SHA-256: 0afd6f2792edb83b7f2a0201a1e0a5eb12ca81ad868fb3e42742340ee6e5fb0e

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